diff options
Diffstat (limited to 'lib/CodeGen/CGDebugInfo.cpp')
| -rw-r--r-- | lib/CodeGen/CGDebugInfo.cpp | 1569 |
1 files changed, 824 insertions, 745 deletions
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp index 048c8f8..978e1bb 100644 --- a/lib/CodeGen/CGDebugInfo.cpp +++ b/lib/CodeGen/CGDebugInfo.cpp @@ -52,64 +52,59 @@ CGDebugInfo::~CGDebugInfo() { "Region stack mismatch, stack not empty!"); } -SaveAndRestoreLocation::SaveAndRestoreLocation(CodeGenFunction &CGF, - CGBuilderTy &B) - : DI(CGF.getDebugInfo()), Builder(B) { - if (DI) { - SavedLoc = DI->getLocation(); - DI->CurLoc = SourceLocation(); +ArtificialLocation::ArtificialLocation(CodeGenFunction &CGF) + : ApplyDebugLocation(CGF) { + if (auto *DI = CGF.getDebugInfo()) { + // Construct a location that has a valid scope, but no line info. + assert(!DI->LexicalBlockStack.empty()); + llvm::DIDescriptor Scope(DI->LexicalBlockStack.back()); + CGF.Builder.SetCurrentDebugLocation(llvm::DebugLoc::get(0, 0, Scope)); } } -SaveAndRestoreLocation::~SaveAndRestoreLocation() { - if (DI) - DI->EmitLocation(Builder, SavedLoc); -} - -NoLocation::NoLocation(CodeGenFunction &CGF, CGBuilderTy &B) - : SaveAndRestoreLocation(CGF, B) { - if (DI) - Builder.SetCurrentDebugLocation(llvm::DebugLoc()); -} - -NoLocation::~NoLocation() { - if (DI) - assert(Builder.getCurrentDebugLocation().isUnknown()); -} - -ArtificialLocation::ArtificialLocation(CodeGenFunction &CGF, CGBuilderTy &B) - : SaveAndRestoreLocation(CGF, B) { - if (DI) - Builder.SetCurrentDebugLocation(llvm::DebugLoc()); +ApplyDebugLocation::ApplyDebugLocation(CodeGenFunction &CGF, + SourceLocation TemporaryLocation, + bool ForceColumnInfo) + : CGF(CGF) { + if (auto *DI = CGF.getDebugInfo()) { + OriginalLocation = CGF.Builder.getCurrentDebugLocation(); + if (TemporaryLocation.isInvalid()) + CGF.Builder.SetCurrentDebugLocation(llvm::DebugLoc()); + else + DI->EmitLocation(CGF.Builder, TemporaryLocation, ForceColumnInfo); + } } -void ArtificialLocation::Emit() { - if (DI) { - // Sync the Builder. - DI->EmitLocation(Builder, SavedLoc); - DI->CurLoc = SourceLocation(); - // Construct a location that has a valid scope, but no line info. - assert(!DI->LexicalBlockStack.empty()); - llvm::DIDescriptor Scope(DI->LexicalBlockStack.back()); - Builder.SetCurrentDebugLocation(llvm::DebugLoc::get(0, 0, Scope)); +ApplyDebugLocation::ApplyDebugLocation(CodeGenFunction &CGF, llvm::DebugLoc Loc) + : CGF(CGF) { + if (CGF.getDebugInfo()) { + OriginalLocation = CGF.Builder.getCurrentDebugLocation(); + if (!Loc.isUnknown()) + CGF.Builder.SetCurrentDebugLocation(Loc); } } -ArtificialLocation::~ArtificialLocation() { - if (DI) - assert(Builder.getCurrentDebugLocation().getLine() == 0); +ApplyDebugLocation::~ApplyDebugLocation() { + // Query CGF so the location isn't overwritten when location updates are + // temporarily disabled (for C++ default function arguments) + if (CGF.getDebugInfo()) + CGF.Builder.SetCurrentDebugLocation(OriginalLocation); } +/// ArtificialLocation - An RAII object that temporarily switches to +/// an artificial debug location that has a valid scope, but no line void CGDebugInfo::setLocation(SourceLocation Loc) { // If the new location isn't valid return. - if (Loc.isInvalid()) return; + if (Loc.isInvalid()) + return; CurLoc = CGM.getContext().getSourceManager().getExpansionLoc(Loc); // If we've changed files in the middle of a lexical scope go ahead // and create a new lexical scope with file node if it's different // from the one in the scope. - if (LexicalBlockStack.empty()) return; + if (LexicalBlockStack.empty()) + return; SourceManager &SM = CGM.getContext().getSourceManager(); llvm::DIScope Scope(LexicalBlockStack.back()); @@ -120,18 +115,17 @@ void CGDebugInfo::setLocation(SourceLocation Loc) { if (Scope.isLexicalBlockFile()) { llvm::DILexicalBlockFile LBF = llvm::DILexicalBlockFile(Scope); - llvm::DIDescriptor D - = DBuilder.createLexicalBlockFile(LBF.getScope(), - getOrCreateFile(CurLoc)); + llvm::DIDescriptor D = DBuilder.createLexicalBlockFile( + LBF.getScope(), getOrCreateFile(CurLoc)); llvm::MDNode *N = D; LexicalBlockStack.pop_back(); - LexicalBlockStack.push_back(N); + LexicalBlockStack.emplace_back(N); } else if (Scope.isLexicalBlock() || Scope.isSubprogram()) { - llvm::DIDescriptor D - = DBuilder.createLexicalBlockFile(Scope, getOrCreateFile(CurLoc)); + llvm::DIDescriptor D = + DBuilder.createLexicalBlockFile(Scope, getOrCreateFile(CurLoc)); llvm::MDNode *N = D; LexicalBlockStack.pop_back(); - LexicalBlockStack.push_back(N); + LexicalBlockStack.emplace_back(N); } } @@ -140,10 +134,9 @@ llvm::DIScope CGDebugInfo::getContextDescriptor(const Decl *Context) { if (!Context) return TheCU; - llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator - I = RegionMap.find(Context); + auto I = RegionMap.find(Context); if (I != RegionMap.end()) { - llvm::Value *V = I->second; + llvm::Metadata *V = I->second; return llvm::DIScope(dyn_cast_or_null<llvm::MDNode>(V)); } @@ -154,7 +147,7 @@ llvm::DIScope CGDebugInfo::getContextDescriptor(const Decl *Context) { if (const RecordDecl *RDecl = dyn_cast<RecordDecl>(Context)) if (!RDecl->isDependentType()) return getOrCreateType(CGM.getContext().getTypeDeclType(RDecl), - getOrCreateMainFile()); + getOrCreateMainFile()); return TheCU; } @@ -162,10 +155,10 @@ llvm::DIScope CGDebugInfo::getContextDescriptor(const Decl *Context) { /// name is constructed on demand (e.g. C++ destructor) then the name /// is stored on the side. StringRef CGDebugInfo::getFunctionName(const FunctionDecl *FD) { - assert (FD && "Invalid FunctionDecl!"); + assert(FD && "Invalid FunctionDecl!"); IdentifierInfo *FII = FD->getIdentifier(); - FunctionTemplateSpecializationInfo *Info - = FD->getTemplateSpecializationInfo(); + FunctionTemplateSpecializationInfo *Info = + FD->getTemplateSpecializationInfo(); if (!Info && FII) return FII->getName(); @@ -194,20 +187,20 @@ StringRef CGDebugInfo::getObjCMethodName(const ObjCMethodDecl *OMD) { OS << (OMD->isInstanceMethod() ? '-' : '+') << '['; const DeclContext *DC = OMD->getDeclContext(); if (const ObjCImplementationDecl *OID = - dyn_cast<const ObjCImplementationDecl>(DC)) { - OS << OID->getName(); + dyn_cast<const ObjCImplementationDecl>(DC)) { + OS << OID->getName(); } else if (const ObjCInterfaceDecl *OID = - dyn_cast<const ObjCInterfaceDecl>(DC)) { - OS << OID->getName(); + dyn_cast<const ObjCInterfaceDecl>(DC)) { + OS << OID->getName(); } else if (const ObjCCategoryImplDecl *OCD = - dyn_cast<const ObjCCategoryImplDecl>(DC)){ - OS << ((const NamedDecl *)OCD)->getIdentifier()->getNameStart() << '(' << - OCD->getIdentifier()->getNameStart() << ')'; + dyn_cast<const ObjCCategoryImplDecl>(DC)) { + OS << ((const NamedDecl *)OCD)->getIdentifier()->getNameStart() << '(' + << OCD->getIdentifier()->getNameStart() << ')'; } else if (isa<ObjCProtocolDecl>(DC)) { // We can extract the type of the class from the self pointer. - if (ImplicitParamDecl* SelfDecl = OMD->getSelfDecl()) { + if (ImplicitParamDecl *SelfDecl = OMD->getSelfDecl()) { QualType ClassTy = - cast<ObjCObjectPointerType>(SelfDecl->getType())->getPointeeType(); + cast<ObjCObjectPointerType>(SelfDecl->getType())->getPointeeType(); ClassTy.print(OS, PrintingPolicy(LangOptions())); } } @@ -223,8 +216,7 @@ StringRef CGDebugInfo::getSelectorName(Selector S) { } /// getClassName - Get class name including template argument list. -StringRef -CGDebugInfo::getClassName(const RecordDecl *RD) { +StringRef CGDebugInfo::getClassName(const RecordDecl *RD) { // quick optimization to avoid having to intern strings that are already // stored reliably elsewhere if (!isa<ClassTemplateSpecializationDecl>(RD)) @@ -256,18 +248,17 @@ llvm::DIFile CGDebugInfo::getOrCreateFile(SourceLocation Loc) { // Cache the results. const char *fname = PLoc.getFilename(); - llvm::DenseMap<const char *, llvm::WeakVH>::iterator it = - DIFileCache.find(fname); + auto it = DIFileCache.find(fname); if (it != DIFileCache.end()) { // Verify that the information still exists. - if (llvm::Value *V = it->second) + if (llvm::Metadata *V = it->second) return llvm::DIFile(cast<llvm::MDNode>(V)); } llvm::DIFile F = DBuilder.createFile(PLoc.getFilename(), getCurrentDirname()); - DIFileCache[fname] = F; + DIFileCache[fname].reset(F); return F; } @@ -283,7 +274,7 @@ unsigned CGDebugInfo::getLineNumber(SourceLocation Loc) { return 0; SourceManager &SM = CGM.getContext().getSourceManager(); PresumedLoc PLoc = SM.getPresumedLoc(Loc.isValid() ? Loc : CurLoc); - return PLoc.isValid()? PLoc.getLine() : 0; + return PLoc.isValid() ? PLoc.getLine() : 0; } /// getColumnNumber - Get column number for the location. @@ -297,7 +288,7 @@ unsigned CGDebugInfo::getColumnNumber(SourceLocation Loc, bool Force) { return 0; SourceManager &SM = CGM.getContext().getSourceManager(); PresumedLoc PLoc = SM.getPresumedLoc(Loc.isValid() ? Loc : CurLoc); - return PLoc.isValid()? PLoc.getColumn() : 0; + return PLoc.isValid() ? PLoc.getColumn() : 0; } StringRef CGDebugInfo::getCurrentDirname() { @@ -388,8 +379,7 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) { StringRef BTName; switch (BT->getKind()) { #define BUILTIN_TYPE(Id, SingletonId) -#define PLACEHOLDER_TYPE(Id, SingletonId) \ - case BuiltinType::Id: +#define PLACEHOLDER_TYPE(Id, SingletonId) case BuiltinType::Id: #include "clang/AST/BuiltinTypes.def" case BuiltinType::Dependent: llvm_unreachable("Unexpected builtin type"); @@ -425,8 +415,10 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) { DBuilder.createStructType(TheCU, "objc_object", getOrCreateMainFile(), 0, 0, 0, 0, llvm::DIType(), llvm::DIArray()); - ObjTy.setTypeArray(DBuilder.getOrCreateArray(&*DBuilder.createMemberType( - ObjTy, "isa", getOrCreateMainFile(), 0, Size, 0, 0, 0, ISATy))); + DBuilder.replaceArrays( + ObjTy, + DBuilder.getOrCreateArray(&*DBuilder.createMemberType( + ObjTy, "isa", getOrCreateMainFile(), 0, Size, 0, 0, 0, ISATy))); return ObjTy; } case BuiltinType::ObjCSel: { @@ -438,8 +430,7 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) { } case BuiltinType::OCLImage1d: - return getOrCreateStructPtrType("opencl_image1d_t", - OCLImage1dDITy); + return getOrCreateStructPtrType("opencl_image1d_t", OCLImage1dDITy); case BuiltinType::OCLImage1dArray: return getOrCreateStructPtrType("opencl_image1d_array_t", OCLImage1dArrayDITy); @@ -447,53 +438,71 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) { return getOrCreateStructPtrType("opencl_image1d_buffer_t", OCLImage1dBufferDITy); case BuiltinType::OCLImage2d: - return getOrCreateStructPtrType("opencl_image2d_t", - OCLImage2dDITy); + return getOrCreateStructPtrType("opencl_image2d_t", OCLImage2dDITy); case BuiltinType::OCLImage2dArray: return getOrCreateStructPtrType("opencl_image2d_array_t", OCLImage2dArrayDITy); case BuiltinType::OCLImage3d: - return getOrCreateStructPtrType("opencl_image3d_t", - OCLImage3dDITy); + return getOrCreateStructPtrType("opencl_image3d_t", OCLImage3dDITy); case BuiltinType::OCLSampler: - return DBuilder.createBasicType("opencl_sampler_t", - CGM.getContext().getTypeSize(BT), - CGM.getContext().getTypeAlign(BT), - llvm::dwarf::DW_ATE_unsigned); + return DBuilder.createBasicType( + "opencl_sampler_t", CGM.getContext().getTypeSize(BT), + CGM.getContext().getTypeAlign(BT), llvm::dwarf::DW_ATE_unsigned); case BuiltinType::OCLEvent: - return getOrCreateStructPtrType("opencl_event_t", - OCLEventDITy); + return getOrCreateStructPtrType("opencl_event_t", OCLEventDITy); case BuiltinType::UChar: - case BuiltinType::Char_U: Encoding = llvm::dwarf::DW_ATE_unsigned_char; break; + case BuiltinType::Char_U: + Encoding = llvm::dwarf::DW_ATE_unsigned_char; + break; case BuiltinType::Char_S: - case BuiltinType::SChar: Encoding = llvm::dwarf::DW_ATE_signed_char; break; + case BuiltinType::SChar: + Encoding = llvm::dwarf::DW_ATE_signed_char; + break; case BuiltinType::Char16: - case BuiltinType::Char32: Encoding = llvm::dwarf::DW_ATE_UTF; break; + case BuiltinType::Char32: + Encoding = llvm::dwarf::DW_ATE_UTF; + break; case BuiltinType::UShort: case BuiltinType::UInt: case BuiltinType::UInt128: case BuiltinType::ULong: case BuiltinType::WChar_U: - case BuiltinType::ULongLong: Encoding = llvm::dwarf::DW_ATE_unsigned; break; + case BuiltinType::ULongLong: + Encoding = llvm::dwarf::DW_ATE_unsigned; + break; case BuiltinType::Short: case BuiltinType::Int: case BuiltinType::Int128: case BuiltinType::Long: case BuiltinType::WChar_S: - case BuiltinType::LongLong: Encoding = llvm::dwarf::DW_ATE_signed; break; - case BuiltinType::Bool: Encoding = llvm::dwarf::DW_ATE_boolean; break; + case BuiltinType::LongLong: + Encoding = llvm::dwarf::DW_ATE_signed; + break; + case BuiltinType::Bool: + Encoding = llvm::dwarf::DW_ATE_boolean; + break; case BuiltinType::Half: case BuiltinType::Float: case BuiltinType::LongDouble: - case BuiltinType::Double: Encoding = llvm::dwarf::DW_ATE_float; break; + case BuiltinType::Double: + Encoding = llvm::dwarf::DW_ATE_float; + break; } switch (BT->getKind()) { - case BuiltinType::Long: BTName = "long int"; break; - case BuiltinType::LongLong: BTName = "long long int"; break; - case BuiltinType::ULong: BTName = "long unsigned int"; break; - case BuiltinType::ULongLong: BTName = "long long unsigned int"; break; + case BuiltinType::Long: + BTName = "long int"; + break; + case BuiltinType::LongLong: + BTName = "long long int"; + break; + case BuiltinType::ULong: + BTName = "long unsigned int"; + break; + case BuiltinType::ULongLong: + BTName = "long long unsigned int"; + break; default: BTName = BT->getName(CGM.getLangOpts()); break; @@ -501,8 +510,7 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) { // Bit size, align and offset of the type. uint64_t Size = CGM.getContext().getTypeSize(BT); uint64_t Align = CGM.getContext().getTypeAlign(BT); - llvm::DIType DbgTy = - DBuilder.createBasicType(BTName, Size, Align, Encoding); + llvm::DIType DbgTy = DBuilder.createBasicType(BTName, Size, Align, Encoding); return DbgTy; } @@ -515,7 +523,7 @@ llvm::DIType CGDebugInfo::CreateType(const ComplexType *Ty) { uint64_t Size = CGM.getContext().getTypeSize(Ty); uint64_t Align = CGM.getContext().getTypeAlign(Ty); llvm::DIType DbgTy = - DBuilder.createBasicType("complex", Size, Align, Encoding); + DBuilder.createBasicType("complex", Size, Align, Encoding); return DbgTy; } @@ -564,25 +572,23 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCObjectPointerType *Ty, // whereas 'id<protocol>' is treated as an ObjCPointerType. For the // debug info, we want to emit 'id' in both cases. if (Ty->isObjCQualifiedIdType()) - return getOrCreateType(CGM.getContext().getObjCIdType(), Unit); + return getOrCreateType(CGM.getContext().getObjCIdType(), Unit); - llvm::DIType DbgTy = - CreatePointerLikeType(llvm::dwarf::DW_TAG_pointer_type, Ty, - Ty->getPointeeType(), Unit); + llvm::DIType DbgTy = CreatePointerLikeType(llvm::dwarf::DW_TAG_pointer_type, + Ty, Ty->getPointeeType(), Unit); return DbgTy; } -llvm::DIType CGDebugInfo::CreateType(const PointerType *Ty, - llvm::DIFile Unit) { +llvm::DIType CGDebugInfo::CreateType(const PointerType *Ty, llvm::DIFile Unit) { return CreatePointerLikeType(llvm::dwarf::DW_TAG_pointer_type, Ty, Ty->getPointeeType(), Unit); } /// In C++ mode, types have linkage, so we can rely on the ODR and /// on their mangled names, if they're external. -static SmallString<256> -getUniqueTagTypeName(const TagType *Ty, CodeGenModule &CGM, - llvm::DICompileUnit TheCU) { +static SmallString<256> getUniqueTagTypeName(const TagType *Ty, + CodeGenModule &CGM, + llvm::DICompileUnit TheCU) { SmallString<256> FullName; // FIXME: ODR should apply to ObjC++ exactly the same wasy it does to C++. // For now, only apply ODR with C++. @@ -627,7 +633,9 @@ CGDebugInfo::getOrCreateRecordFwdDecl(const RecordType *Ty, SmallString<256> FullName = getUniqueTagTypeName(Ty, CGM, TheCU); llvm::DICompositeType RetTy = DBuilder.createReplaceableForwardDecl( Tag, RDName, Ctx, DefUnit, Line, 0, 0, 0, FullName); - ReplaceMap.push_back(std::make_pair(Ty, static_cast<llvm::Value *>(RetTy))); + ReplaceMap.emplace_back( + std::piecewise_construct, std::make_tuple(Ty), + std::make_tuple(static_cast<llvm::Metadata *>(RetTy))); return RetTy; } @@ -666,7 +674,7 @@ llvm::DIType CGDebugInfo::CreateType(const BlockPointerType *Ty, if (BlockLiteralGeneric) return BlockLiteralGeneric; - SmallVector<llvm::Value *, 8> EltTys; + SmallVector<llvm::Metadata *, 8> EltTys; llvm::DIType FieldTy; QualType FType; uint64_t FieldSize, FieldOffset; @@ -685,9 +693,9 @@ llvm::DIType CGDebugInfo::CreateType(const BlockPointerType *Ty, unsigned Flags = llvm::DIDescriptor::FlagAppleBlock; unsigned LineNo = getLineNumber(CurLoc); - EltTy = DBuilder.createStructType(Unit, "__block_descriptor", - Unit, LineNo, FieldOffset, 0, - Flags, llvm::DIType(), Elements); + EltTy = DBuilder.createStructType(Unit, "__block_descriptor", Unit, LineNo, + FieldOffset, 0, Flags, llvm::DIType(), + Elements); // Bit size, align and offset of the type. uint64_t Size = CGM.getContext().getTypeSize(Ty); @@ -700,50 +708,52 @@ llvm::DIType CGDebugInfo::CreateType(const BlockPointerType *Ty, FType = CGM.getContext().IntTy; EltTys.push_back(CreateMemberType(Unit, FType, "__flags", &FieldOffset)); EltTys.push_back(CreateMemberType(Unit, FType, "__reserved", &FieldOffset)); - FType = CGM.getContext().getPointerType(CGM.getContext().VoidTy); + FType = CGM.getContext().getPointerType(Ty->getPointeeType()); EltTys.push_back(CreateMemberType(Unit, FType, "__FuncPtr", &FieldOffset)); FType = CGM.getContext().getPointerType(CGM.getContext().VoidTy); FieldTy = DescTy; FieldSize = CGM.getContext().getTypeSize(Ty); FieldAlign = CGM.getContext().getTypeAlign(Ty); - FieldTy = DBuilder.createMemberType(Unit, "__descriptor", Unit, - LineNo, FieldSize, FieldAlign, - FieldOffset, 0, FieldTy); + FieldTy = + DBuilder.createMemberType(Unit, "__descriptor", Unit, LineNo, FieldSize, + FieldAlign, FieldOffset, 0, FieldTy); EltTys.push_back(FieldTy); FieldOffset += FieldSize; Elements = DBuilder.getOrCreateArray(EltTys); - EltTy = DBuilder.createStructType(Unit, "__block_literal_generic", - Unit, LineNo, FieldOffset, 0, - Flags, llvm::DIType(), Elements); + EltTy = DBuilder.createStructType(Unit, "__block_literal_generic", Unit, + LineNo, FieldOffset, 0, Flags, + llvm::DIType(), Elements); BlockLiteralGeneric = DBuilder.createPointerType(EltTy, Size); return BlockLiteralGeneric; } -llvm::DIType CGDebugInfo::CreateType(const TemplateSpecializationType *Ty, llvm::DIFile Unit) { +llvm::DIType CGDebugInfo::CreateType(const TemplateSpecializationType *Ty, + llvm::DIFile Unit) { assert(Ty->isTypeAlias()); llvm::DIType Src = getOrCreateType(Ty->getAliasedType(), Unit); SmallString<128> NS; llvm::raw_svector_ostream OS(NS); - Ty->getTemplateName().print(OS, CGM.getContext().getPrintingPolicy(), /*qualified*/ false); + Ty->getTemplateName().print(OS, CGM.getContext().getPrintingPolicy(), + /*qualified*/ false); TemplateSpecializationType::PrintTemplateArgumentList( OS, Ty->getArgs(), Ty->getNumArgs(), CGM.getContext().getPrintingPolicy()); - TypeAliasDecl *AliasDecl = - cast<TypeAliasTemplateDecl>(Ty->getTemplateName().getAsTemplateDecl()) - ->getTemplatedDecl(); + TypeAliasDecl *AliasDecl = cast<TypeAliasTemplateDecl>( + Ty->getTemplateName().getAsTemplateDecl())->getTemplatedDecl(); SourceLocation Loc = AliasDecl->getLocation(); llvm::DIFile File = getOrCreateFile(Loc); unsigned Line = getLineNumber(Loc); - llvm::DIDescriptor Ctxt = getContextDescriptor(cast<Decl>(AliasDecl->getDeclContext())); + llvm::DIDescriptor Ctxt = + getContextDescriptor(cast<Decl>(AliasDecl->getDeclContext())); return DBuilder.createTypedef(Src, internString(OS.str()), File, Line, Ctxt); } @@ -760,15 +770,15 @@ llvm::DIType CGDebugInfo::CreateType(const TypedefType *Ty, llvm::DIFile Unit) { const TypedefNameDecl *TyDecl = Ty->getDecl(); llvm::DIDescriptor TypedefContext = - getContextDescriptor(cast<Decl>(Ty->getDecl()->getDeclContext())); + getContextDescriptor(cast<Decl>(Ty->getDecl()->getDeclContext())); - return - DBuilder.createTypedef(Src, TyDecl->getName(), File, Line, TypedefContext); + return DBuilder.createTypedef(Src, TyDecl->getName(), File, Line, + TypedefContext); } llvm::DIType CGDebugInfo::CreateType(const FunctionType *Ty, llvm::DIFile Unit) { - SmallVector<llvm::Value *, 16> EltTys; + SmallVector<llvm::Metadata *, 16> EltTys; // Add the result type at least. EltTys.push_back(getOrCreateType(Ty->getReturnType(), Unit)); @@ -784,49 +794,66 @@ llvm::DIType CGDebugInfo::CreateType(const FunctionType *Ty, EltTys.push_back(DBuilder.createUnspecifiedParameter()); } - llvm::DIArray EltTypeArray = DBuilder.getOrCreateArray(EltTys); + llvm::DITypeArray EltTypeArray = DBuilder.getOrCreateTypeArray(EltTys); return DBuilder.createSubroutineType(Unit, EltTypeArray); } +/// Convert an AccessSpecifier into the corresponding DIDescriptor flag. +/// As an optimization, return 0 if the access specifier equals the +/// default for the containing type. +static unsigned getAccessFlag(AccessSpecifier Access, const RecordDecl *RD) { + AccessSpecifier Default = clang::AS_none; + if (RD && RD->isClass()) + Default = clang::AS_private; + else if (RD && (RD->isStruct() || RD->isUnion())) + Default = clang::AS_public; -llvm::DIType CGDebugInfo::createFieldType(StringRef name, - QualType type, - uint64_t sizeInBitsOverride, - SourceLocation loc, - AccessSpecifier AS, - uint64_t offsetInBits, - llvm::DIFile tunit, - llvm::DIScope scope) { + if (Access == Default) + return 0; + + switch (Access) { + case clang::AS_private: + return llvm::DIDescriptor::FlagPrivate; + case clang::AS_protected: + return llvm::DIDescriptor::FlagProtected; + case clang::AS_public: + return llvm::DIDescriptor::FlagPublic; + case clang::AS_none: + return 0; + } + llvm_unreachable("unexpected access enumerator"); +} + +llvm::DIType CGDebugInfo::createFieldType( + StringRef name, QualType type, uint64_t sizeInBitsOverride, + SourceLocation loc, AccessSpecifier AS, uint64_t offsetInBits, + llvm::DIFile tunit, llvm::DIScope scope, const RecordDecl *RD) { llvm::DIType debugType = getOrCreateType(type, tunit); // Get the location for the field. llvm::DIFile file = getOrCreateFile(loc); unsigned line = getLineNumber(loc); - uint64_t sizeInBits = 0; - unsigned alignInBits = 0; + uint64_t SizeInBits = 0; + unsigned AlignInBits = 0; if (!type->isIncompleteArrayType()) { - std::tie(sizeInBits, alignInBits) = CGM.getContext().getTypeInfo(type); + TypeInfo TI = CGM.getContext().getTypeInfo(type); + SizeInBits = TI.Width; + AlignInBits = TI.Align; if (sizeInBitsOverride) - sizeInBits = sizeInBitsOverride; + SizeInBits = sizeInBitsOverride; } - unsigned flags = 0; - if (AS == clang::AS_private) - flags |= llvm::DIDescriptor::FlagPrivate; - else if (AS == clang::AS_protected) - flags |= llvm::DIDescriptor::FlagProtected; - - return DBuilder.createMemberType(scope, name, file, line, sizeInBits, - alignInBits, offsetInBits, flags, debugType); + unsigned flags = getAccessFlag(AS, RD); + return DBuilder.createMemberType(scope, name, file, line, SizeInBits, + AlignInBits, offsetInBits, flags, debugType); } /// CollectRecordLambdaFields - Helper for CollectRecordFields. -void CGDebugInfo:: -CollectRecordLambdaFields(const CXXRecordDecl *CXXDecl, - SmallVectorImpl<llvm::Value *> &elements, - llvm::DIType RecordTy) { +void CGDebugInfo::CollectRecordLambdaFields( + const CXXRecordDecl *CXXDecl, SmallVectorImpl<llvm::Metadata *> &elements, + llvm::DIType RecordTy) { // For C++11 Lambdas a Field will be the same as a Capture, but the Capture // has the name and the location of the variable so we should iterate over // both concurrently. @@ -834,7 +861,8 @@ CollectRecordLambdaFields(const CXXRecordDecl *CXXDecl, RecordDecl::field_iterator Field = CXXDecl->field_begin(); unsigned fieldno = 0; for (CXXRecordDecl::capture_const_iterator I = CXXDecl->captures_begin(), - E = CXXDecl->captures_end(); I != E; ++I, ++Field, ++fieldno) { + E = CXXDecl->captures_end(); + I != E; ++I, ++Field, ++fieldno) { const LambdaCapture &C = *I; if (C.capturesVariable()) { VarDecl *V = C.getCapturedVar(); @@ -845,23 +873,22 @@ CollectRecordLambdaFields(const CXXRecordDecl *CXXDecl, SizeInBitsOverride = Field->getBitWidthValue(CGM.getContext()); assert(SizeInBitsOverride && "found named 0-width bitfield"); } - llvm::DIType fieldType - = createFieldType(VName, Field->getType(), SizeInBitsOverride, - C.getLocation(), Field->getAccess(), - layout.getFieldOffset(fieldno), VUnit, RecordTy); + llvm::DIType fieldType = createFieldType( + VName, Field->getType(), SizeInBitsOverride, C.getLocation(), + Field->getAccess(), layout.getFieldOffset(fieldno), VUnit, RecordTy, + CXXDecl); elements.push_back(fieldType); - } else { + } else if (C.capturesThis()) { // TODO: Need to handle 'this' in some way by probably renaming the // this of the lambda class and having a field member of 'this' or // by using AT_object_pointer for the function and having that be // used as 'this' for semantic references. - assert(C.capturesThis() && "Field that isn't captured and isn't this?"); FieldDecl *f = *Field; llvm::DIFile VUnit = getOrCreateFile(f->getLocation()); QualType type = f->getType(); - llvm::DIType fieldType - = createFieldType("this", type, 0, f->getLocation(), f->getAccess(), - layout.getFieldOffset(fieldno), VUnit, RecordTy); + llvm::DIType fieldType = createFieldType( + "this", type, 0, f->getLocation(), f->getAccess(), + layout.getFieldOffset(fieldno), VUnit, RecordTy, CXXDecl); elements.push_back(fieldType); } @@ -869,11 +896,12 @@ CollectRecordLambdaFields(const CXXRecordDecl *CXXDecl, } /// Helper for CollectRecordFields. -llvm::DIDerivedType -CGDebugInfo::CreateRecordStaticField(const VarDecl *Var, - llvm::DIType RecordTy) { +llvm::DIDerivedType CGDebugInfo::CreateRecordStaticField(const VarDecl *Var, + llvm::DIType RecordTy, + const RecordDecl *RD) { // Create the descriptor for the static variable, with or without // constant initializers. + Var = Var->getCanonicalDecl(); llvm::DIFile VUnit = getOrCreateFile(Var->getLocation()); llvm::DIType VTy = getOrCreateType(Var->getType(), VUnit); @@ -890,25 +918,18 @@ CGDebugInfo::CreateRecordStaticField(const VarDecl *Var, } } - unsigned Flags = 0; - AccessSpecifier Access = Var->getAccess(); - if (Access == clang::AS_private) - Flags |= llvm::DIDescriptor::FlagPrivate; - else if (Access == clang::AS_protected) - Flags |= llvm::DIDescriptor::FlagProtected; - + unsigned Flags = getAccessFlag(Var->getAccess(), RD); llvm::DIDerivedType GV = DBuilder.createStaticMemberType( RecordTy, VName, VUnit, LineNumber, VTy, Flags, C); - StaticDataMemberCache[Var->getCanonicalDecl()] = llvm::WeakVH(GV); + StaticDataMemberCache[Var->getCanonicalDecl()].reset(GV); return GV; } /// CollectRecordNormalField - Helper for CollectRecordFields. -void CGDebugInfo:: -CollectRecordNormalField(const FieldDecl *field, uint64_t OffsetInBits, - llvm::DIFile tunit, - SmallVectorImpl<llvm::Value *> &elements, - llvm::DIType RecordTy) { +void CGDebugInfo::CollectRecordNormalField( + const FieldDecl *field, uint64_t OffsetInBits, llvm::DIFile tunit, + SmallVectorImpl<llvm::Metadata *> &elements, llvm::DIType RecordTy, + const RecordDecl *RD) { StringRef name = field->getName(); QualType type = field->getType(); @@ -922,20 +943,19 @@ CollectRecordNormalField(const FieldDecl *field, uint64_t OffsetInBits, assert(SizeInBitsOverride && "found named 0-width bitfield"); } - llvm::DIType fieldType - = createFieldType(name, type, SizeInBitsOverride, - field->getLocation(), field->getAccess(), - OffsetInBits, tunit, RecordTy); + llvm::DIType fieldType = + createFieldType(name, type, SizeInBitsOverride, field->getLocation(), + field->getAccess(), OffsetInBits, tunit, RecordTy, RD); elements.push_back(fieldType); } /// CollectRecordFields - A helper function to collect debug info for /// record fields. This is used while creating debug info entry for a Record. -void CGDebugInfo::CollectRecordFields(const RecordDecl *record, - llvm::DIFile tunit, - SmallVectorImpl<llvm::Value *> &elements, - llvm::DICompositeType RecordTy) { +void CGDebugInfo::CollectRecordFields( + const RecordDecl *record, llvm::DIFile tunit, + SmallVectorImpl<llvm::Metadata *> &elements, + llvm::DICompositeType RecordTy) { const CXXRecordDecl *CXXDecl = dyn_cast<CXXRecordDecl>(record); if (CXXDecl && CXXDecl->isLambda()) @@ -951,18 +971,19 @@ void CGDebugInfo::CollectRecordFields(const RecordDecl *record, for (const auto *I : record->decls()) if (const auto *V = dyn_cast<VarDecl>(I)) { // Reuse the existing static member declaration if one exists - llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator MI = - StaticDataMemberCache.find(V->getCanonicalDecl()); + auto MI = StaticDataMemberCache.find(V->getCanonicalDecl()); if (MI != StaticDataMemberCache.end()) { assert(MI->second && "Static data member declaration should still exist"); elements.push_back( llvm::DIDerivedType(cast<llvm::MDNode>(MI->second))); - } else - elements.push_back(CreateRecordStaticField(V, RecordTy)); + } else { + auto Field = CreateRecordStaticField(V, RecordTy, record); + elements.push_back(Field); + } } else if (const auto *field = dyn_cast<FieldDecl>(I)) { - CollectRecordNormalField(field, layout.getFieldOffset(fieldNo), - tunit, elements, RecordTy); + CollectRecordNormalField(field, layout.getFieldOffset(fieldNo), tunit, + elements, RecordTy, record); // Bump field number for next field. ++fieldNo; @@ -986,11 +1007,11 @@ CGDebugInfo::getOrCreateMethodType(const CXXMethodDecl *Method, llvm::DICompositeType CGDebugInfo::getOrCreateInstanceMethodType( QualType ThisPtr, const FunctionProtoType *Func, llvm::DIFile Unit) { // Add "this" pointer. - llvm::DIArray Args = llvm::DICompositeType( + llvm::DITypeArray Args = llvm::DISubroutineType( getOrCreateType(QualType(Func, 0), Unit)).getTypeArray(); - assert (Args.getNumElements() && "Invalid number of arguments!"); + assert(Args.getNumElements() && "Invalid number of arguments!"); - SmallVector<llvm::Value *, 16> Elts; + SmallVector<llvm::Metadata *, 16> Elts; // First element is always return type. For 'void' functions it is NULL. Elts.push_back(Args.getElement(0)); @@ -1006,8 +1027,8 @@ llvm::DICompositeType CGDebugInfo::getOrCreateInstanceMethodType( uint64_t Align = CGM.getContext().getTypeAlign(ThisPtrTy); llvm::DIType PointeeType = getOrCreateType(PointeeTy, Unit); llvm::DIType ThisPtrType = - DBuilder.createPointerType(PointeeType, Size, Align); - TypeCache[ThisPtr.getAsOpaquePtr()] = ThisPtrType; + DBuilder.createPointerType(PointeeType, Size, Align); + TypeCache[ThisPtr.getAsOpaquePtr()].reset(ThisPtrType); // TODO: This and the artificial type below are misleading, the // types aren't artificial the argument is, but the current // metadata doesn't represent that. @@ -1015,7 +1036,7 @@ llvm::DICompositeType CGDebugInfo::getOrCreateInstanceMethodType( Elts.push_back(ThisPtrType); } else { llvm::DIType ThisPtrType = getOrCreateType(ThisPtr, Unit); - TypeCache[ThisPtr.getAsOpaquePtr()] = ThisPtrType; + TypeCache[ThisPtr.getAsOpaquePtr()].reset(ThisPtrType); ThisPtrType = DBuilder.createObjectPointerType(ThisPtrType); Elts.push_back(ThisPtrType); } @@ -1024,7 +1045,7 @@ llvm::DICompositeType CGDebugInfo::getOrCreateInstanceMethodType( for (unsigned i = 1, e = Args.getNumElements(); i != e; ++i) Elts.push_back(Args.getElement(i)); - llvm::DIArray EltTypeArray = DBuilder.getOrCreateArray(Elts); + llvm::DITypeArray EltTypeArray = DBuilder.getOrCreateTypeArray(Elts); unsigned Flags = 0; if (Func->getExtProtoInfo().RefQualifier == RQ_LValue) @@ -1049,10 +1070,9 @@ static bool isFunctionLocalClass(const CXXRecordDecl *RD) { /// a single member function GlobalDecl. llvm::DISubprogram CGDebugInfo::CreateCXXMemberFunction(const CXXMethodDecl *Method, - llvm::DIFile Unit, - llvm::DIType RecordTy) { + llvm::DIFile Unit, llvm::DIType RecordTy) { bool IsCtorOrDtor = - isa<CXXConstructorDecl>(Method) || isa<CXXDestructorDecl>(Method); + isa<CXXConstructorDecl>(Method) || isa<CXXDestructorDecl>(Method); StringRef MethodName = getFunctionName(Method); llvm::DICompositeType MethodTy = getOrCreateMethodType(Method, Unit); @@ -1096,16 +1116,12 @@ CGDebugInfo::CreateCXXMemberFunction(const CXXMethodDecl *Method, unsigned Flags = 0; if (Method->isImplicit()) Flags |= llvm::DIDescriptor::FlagArtificial; - AccessSpecifier Access = Method->getAccess(); - if (Access == clang::AS_private) - Flags |= llvm::DIDescriptor::FlagPrivate; - else if (Access == clang::AS_protected) - Flags |= llvm::DIDescriptor::FlagProtected; + Flags |= getAccessFlag(Method->getAccess(), Method->getParent()); if (const CXXConstructorDecl *CXXC = dyn_cast<CXXConstructorDecl>(Method)) { if (CXXC->isExplicit()) Flags |= llvm::DIDescriptor::FlagExplicit; } else if (const CXXConversionDecl *CXXC = - dyn_cast<CXXConversionDecl>(Method)) { + dyn_cast<CXXConversionDecl>(Method)) { if (CXXC->isExplicit()) Flags |= llvm::DIDescriptor::FlagExplicit; } @@ -1117,16 +1133,13 @@ CGDebugInfo::CreateCXXMemberFunction(const CXXMethodDecl *Method, Flags |= llvm::DIDescriptor::FlagRValueReference; llvm::DIArray TParamsArray = CollectFunctionTemplateParams(Method, Unit); - llvm::DISubprogram SP = - DBuilder.createMethod(RecordTy, MethodName, MethodLinkageName, - MethodDefUnit, MethodLine, - MethodTy, /*isLocalToUnit=*/false, - /* isDefinition=*/ false, - Virtuality, VIndex, ContainingType, - Flags, CGM.getLangOpts().Optimize, nullptr, - TParamsArray); + llvm::DISubprogram SP = DBuilder.createMethod( + RecordTy, MethodName, MethodLinkageName, MethodDefUnit, MethodLine, + MethodTy, /*isLocalToUnit=*/false, + /* isDefinition=*/false, Virtuality, VIndex, ContainingType, Flags, + CGM.getLangOpts().Optimize, nullptr, TParamsArray); - SPCache[Method->getCanonicalDecl()] = llvm::WeakVH(SP); + SPCache[Method->getCanonicalDecl()].reset(SP); return SP; } @@ -1134,53 +1147,49 @@ CGDebugInfo::CreateCXXMemberFunction(const CXXMethodDecl *Method, /// CollectCXXMemberFunctions - A helper function to collect debug info for /// C++ member functions. This is used while creating debug info entry for /// a Record. -void CGDebugInfo:: -CollectCXXMemberFunctions(const CXXRecordDecl *RD, llvm::DIFile Unit, - SmallVectorImpl<llvm::Value *> &EltTys, - llvm::DIType RecordTy) { +void CGDebugInfo::CollectCXXMemberFunctions( + const CXXRecordDecl *RD, llvm::DIFile Unit, + SmallVectorImpl<llvm::Metadata *> &EltTys, llvm::DIType RecordTy) { // Since we want more than just the individual member decls if we // have templated functions iterate over every declaration to gather // the functions. - for(const auto *I : RD->decls()) { - if (const auto *Method = dyn_cast<CXXMethodDecl>(I)) { - // Reuse the existing member function declaration if it exists. - // It may be associated with the declaration of the type & should be - // reused as we're building the definition. - // - // This situation can arise in the vtable-based debug info reduction where - // implicit members are emitted in a non-vtable TU. - llvm::DenseMap<const FunctionDecl *, llvm::WeakVH>::iterator MI = - SPCache.find(Method->getCanonicalDecl()); - if (MI == SPCache.end()) { - // If the member is implicit, lazily create it when we see the - // definition, not before. (an ODR-used implicit default ctor that's - // never actually code generated should not produce debug info) - if (!Method->isImplicit()) - EltTys.push_back(CreateCXXMemberFunction(Method, Unit, RecordTy)); - } else - EltTys.push_back(MI->second); - } else if (const auto *FTD = dyn_cast<FunctionTemplateDecl>(I)) { - // Add any template specializations that have already been seen. Like - // implicit member functions, these may have been added to a declaration - // in the case of vtable-based debug info reduction. - for (const auto *SI : FTD->specializations()) { - llvm::DenseMap<const FunctionDecl *, llvm::WeakVH>::iterator MI = - SPCache.find(cast<CXXMethodDecl>(SI)->getCanonicalDecl()); - if (MI != SPCache.end()) - EltTys.push_back(MI->second); - } - } + for (const auto *I : RD->decls()) { + const auto *Method = dyn_cast<CXXMethodDecl>(I); + // If the member is implicit, don't add it to the member list. This avoids + // the member being added to type units by LLVM, while still allowing it + // to be emitted into the type declaration/reference inside the compile + // unit. + // FIXME: Handle Using(Shadow?)Decls here to create + // DW_TAG_imported_declarations inside the class for base decls brought into + // derived classes. GDB doesn't seem to notice/leverage these when I tried + // it, so I'm not rushing to fix this. (GCC seems to produce them, if + // referenced) + if (!Method || Method->isImplicit()) + continue; + + if (Method->getType()->getAs<FunctionProtoType>()->getContainedAutoType()) + continue; + + // Reuse the existing member function declaration if it exists. + // It may be associated with the declaration of the type & should be + // reused as we're building the definition. + // + // This situation can arise in the vtable-based debug info reduction where + // implicit members are emitted in a non-vtable TU. + auto MI = SPCache.find(Method->getCanonicalDecl()); + EltTys.push_back(MI == SPCache.end() + ? CreateCXXMemberFunction(Method, Unit, RecordTy) + : static_cast<llvm::Metadata *>(MI->second)); } } /// CollectCXXBases - A helper function to collect debug info for /// C++ base classes. This is used while creating debug info entry for /// a Record. -void CGDebugInfo:: -CollectCXXBases(const CXXRecordDecl *RD, llvm::DIFile Unit, - SmallVectorImpl<llvm::Value *> &EltTys, - llvm::DIType RecordTy) { +void CGDebugInfo::CollectCXXBases(const CXXRecordDecl *RD, llvm::DIFile Unit, + SmallVectorImpl<llvm::Metadata *> &EltTys, + llvm::DIType RecordTy) { const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(RD); for (const auto &BI : RD->bases()) { @@ -1188,40 +1197,40 @@ CollectCXXBases(const CXXRecordDecl *RD, llvm::DIFile Unit, uint64_t BaseOffset; const CXXRecordDecl *Base = - cast<CXXRecordDecl>(BI.getType()->getAs<RecordType>()->getDecl()); + cast<CXXRecordDecl>(BI.getType()->getAs<RecordType>()->getDecl()); if (BI.isVirtual()) { - // virtual base offset offset is -ve. The code generator emits dwarf - // expression where it expects +ve number. - BaseOffset = - 0 - CGM.getItaniumVTableContext() - .getVirtualBaseOffsetOffset(RD, Base).getQuantity(); + if (CGM.getTarget().getCXXABI().isItaniumFamily()) { + // virtual base offset offset is -ve. The code generator emits dwarf + // expression where it expects +ve number. + BaseOffset = 0 - CGM.getItaniumVTableContext() + .getVirtualBaseOffsetOffset(RD, Base) + .getQuantity(); + } else { + // In the MS ABI, store the vbtable offset, which is analogous to the + // vbase offset offset in Itanium. + BaseOffset = + 4 * CGM.getMicrosoftVTableContext().getVBTableIndex(RD, Base); + } BFlags = llvm::DIDescriptor::FlagVirtual; } else BaseOffset = CGM.getContext().toBits(RL.getBaseClassOffset(Base)); // FIXME: Inconsistent units for BaseOffset. It is in bytes when // BI->isVirtual() and bits when not. - AccessSpecifier Access = BI.getAccessSpecifier(); - if (Access == clang::AS_private) - BFlags |= llvm::DIDescriptor::FlagPrivate; - else if (Access == clang::AS_protected) - BFlags |= llvm::DIDescriptor::FlagProtected; - - llvm::DIType DTy = - DBuilder.createInheritance(RecordTy, - getOrCreateType(BI.getType(), Unit), - BaseOffset, BFlags); + BFlags |= getAccessFlag(BI.getAccessSpecifier(), RD); + llvm::DIType DTy = DBuilder.createInheritance( + RecordTy, getOrCreateType(BI.getType(), Unit), BaseOffset, BFlags); EltTys.push_back(DTy); } } /// CollectTemplateParams - A helper function to collect template parameters. -llvm::DIArray CGDebugInfo:: -CollectTemplateParams(const TemplateParameterList *TPList, - ArrayRef<TemplateArgument> TAList, - llvm::DIFile Unit) { - SmallVector<llvm::Value *, 16> TemplateParams; +llvm::DIArray +CGDebugInfo::CollectTemplateParams(const TemplateParameterList *TPList, + ArrayRef<TemplateArgument> TAList, + llvm::DIFile Unit) { + SmallVector<llvm::Metadata *, 16> TemplateParams; for (unsigned i = 0, e = TAList.size(); i != e; ++i) { const TemplateArgument &TA = TAList[i]; StringRef Name; @@ -1244,46 +1253,41 @@ CollectTemplateParams(const TemplateParameterList *TPList, } break; case TemplateArgument::Declaration: { const ValueDecl *D = TA.getAsDecl(); - bool InstanceMember = D->isCXXInstanceMember(); - QualType T = InstanceMember - ? CGM.getContext().getMemberPointerType( - D->getType(), cast<RecordDecl>(D->getDeclContext()) - ->getTypeForDecl()) - : CGM.getContext().getPointerType(D->getType()); + QualType T = TA.getParamTypeForDecl().getDesugaredType(CGM.getContext()); llvm::DIType TTy = getOrCreateType(T, Unit); - llvm::Value *V = nullptr; + llvm::Constant *V = nullptr; + const CXXMethodDecl *MD; // Variable pointer template parameters have a value that is the address // of the variable. - if (const VarDecl *VD = dyn_cast<VarDecl>(D)) + if (const auto *VD = dyn_cast<VarDecl>(D)) V = CGM.GetAddrOfGlobalVar(VD); // Member function pointers have special support for building them, though // this is currently unsupported in LLVM CodeGen. - if (InstanceMember) { - if (const CXXMethodDecl *method = dyn_cast<CXXMethodDecl>(D)) - V = CGM.getCXXABI().EmitMemberPointer(method); - } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) + else if ((MD = dyn_cast<CXXMethodDecl>(D)) && MD->isInstance()) + V = CGM.getCXXABI().EmitMemberPointer(MD); + else if (const auto *FD = dyn_cast<FunctionDecl>(D)) V = CGM.GetAddrOfFunction(FD); // Member data pointers have special handling too to compute the fixed // offset within the object. - if (isa<FieldDecl>(D) || isa<IndirectFieldDecl>(D)) { + else if (const auto *MPT = dyn_cast<MemberPointerType>(T.getTypePtr())) { // These five lines (& possibly the above member function pointer // handling) might be able to be refactored to use similar code in // CodeGenModule::getMemberPointerConstant uint64_t fieldOffset = CGM.getContext().getFieldOffset(D); CharUnits chars = - CGM.getContext().toCharUnitsFromBits((int64_t) fieldOffset); - V = CGM.getCXXABI().EmitMemberDataPointer( - cast<MemberPointerType>(T.getTypePtr()), chars); + CGM.getContext().toCharUnitsFromBits((int64_t)fieldOffset); + V = CGM.getCXXABI().EmitMemberDataPointer(MPT, chars); } llvm::DITemplateValueParameter TVP = - DBuilder.createTemplateValueParameter(TheCU, Name, TTy, - V->stripPointerCasts()); + DBuilder.createTemplateValueParameter( + TheCU, Name, TTy, + cast_or_null<llvm::Constant>(V->stripPointerCasts())); TemplateParams.push_back(TVP); } break; case TemplateArgument::NullPtr: { QualType T = TA.getNullPtrType(); llvm::DIType TTy = getOrCreateType(T, Unit); - llvm::Value *V = nullptr; + llvm::Constant *V = nullptr; // Special case member data pointer null values since they're actually -1 // instead of zero. if (const MemberPointerType *MPT = @@ -1298,33 +1302,34 @@ CollectTemplateParams(const TemplateParameterList *TPList, if (!V) V = llvm::ConstantInt::get(CGM.Int8Ty, 0); llvm::DITemplateValueParameter TVP = - DBuilder.createTemplateValueParameter(TheCU, Name, TTy, V); + DBuilder.createTemplateValueParameter(TheCU, Name, TTy, + cast<llvm::Constant>(V)); TemplateParams.push_back(TVP); } break; case TemplateArgument::Template: { - llvm::DITemplateValueParameter TVP = - DBuilder.createTemplateTemplateParameter( - TheCU, Name, llvm::DIType(), - TA.getAsTemplate().getAsTemplateDecl() - ->getQualifiedNameAsString()); + llvm::DITemplateValueParameter + TVP = DBuilder.createTemplateTemplateParameter( + TheCU, Name, llvm::DIType(), + TA.getAsTemplate().getAsTemplateDecl()->getQualifiedNameAsString()); TemplateParams.push_back(TVP); } break; case TemplateArgument::Pack: { - llvm::DITemplateValueParameter TVP = - DBuilder.createTemplateParameterPack( - TheCU, Name, llvm::DIType(), - CollectTemplateParams(nullptr, TA.getPackAsArray(), Unit)); + llvm::DITemplateValueParameter TVP = DBuilder.createTemplateParameterPack( + TheCU, Name, llvm::DIType(), + CollectTemplateParams(nullptr, TA.getPackAsArray(), Unit)); TemplateParams.push_back(TVP); } break; case TemplateArgument::Expression: { const Expr *E = TA.getAsExpr(); QualType T = E->getType(); - llvm::Value *V = CGM.EmitConstantExpr(E, T); + if (E->isGLValue()) + T = CGM.getContext().getLValueReferenceType(T); + llvm::Constant *V = CGM.EmitConstantExpr(E, T); assert(V && "Expression in template argument isn't constant"); llvm::DIType TTy = getOrCreateType(T, Unit); llvm::DITemplateValueParameter TVP = - DBuilder.createTemplateValueParameter(TheCU, Name, TTy, - V->stripPointerCasts()); + DBuilder.createTemplateValueParameter( + TheCU, Name, TTy, cast<llvm::Constant>(V->stripPointerCasts())); TemplateParams.push_back(TVP); } break; // And the following should never occur: @@ -1339,13 +1344,13 @@ CollectTemplateParams(const TemplateParameterList *TPList, /// CollectFunctionTemplateParams - A helper function to collect debug /// info for function template parameters. -llvm::DIArray CGDebugInfo:: -CollectFunctionTemplateParams(const FunctionDecl *FD, llvm::DIFile Unit) { +llvm::DIArray CGDebugInfo::CollectFunctionTemplateParams(const FunctionDecl *FD, + llvm::DIFile Unit) { if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplateSpecialization) { - const TemplateParameterList *TList = - FD->getTemplateSpecializationInfo()->getTemplate() - ->getTemplateParameters(); + const TemplateParameterList *TList = FD->getTemplateSpecializationInfo() + ->getTemplate() + ->getTemplateParameters(); return CollectTemplateParams( TList, FD->getTemplateSpecializationArgs()->asArray(), Unit); } @@ -1354,13 +1359,12 @@ CollectFunctionTemplateParams(const FunctionDecl *FD, llvm::DIFile Unit) { /// CollectCXXTemplateParams - A helper function to collect debug info for /// template parameters. -llvm::DIArray CGDebugInfo:: -CollectCXXTemplateParams(const ClassTemplateSpecializationDecl *TSpecial, - llvm::DIFile Unit) { +llvm::DIArray CGDebugInfo::CollectCXXTemplateParams( + const ClassTemplateSpecializationDecl *TSpecial, llvm::DIFile Unit) { // Always get the full list of parameters, not just the ones from // the specialization. TemplateParameterList *TPList = - TSpecial->getSpecializedTemplate()->getTemplateParameters(); + TSpecial->getSpecializedTemplate()->getTemplateParameters(); const TemplateArgumentList &TAList = TSpecial->getTemplateArgs(); return CollectTemplateParams(TPList, TAList.asArray(), Unit); } @@ -1373,12 +1377,12 @@ llvm::DIType CGDebugInfo::getOrCreateVTablePtrType(llvm::DIFile Unit) { ASTContext &Context = CGM.getContext(); /* Function type */ - llvm::Value *STy = getOrCreateType(Context.IntTy, Unit); - llvm::DIArray SElements = DBuilder.getOrCreateArray(STy); + llvm::Metadata *STy = getOrCreateType(Context.IntTy, Unit); + llvm::DITypeArray SElements = DBuilder.getOrCreateTypeArray(STy); llvm::DIType SubTy = DBuilder.createSubroutineType(Unit, SElements); unsigned Size = Context.getTypeSize(Context.VoidPtrTy); - llvm::DIType vtbl_ptr_type = DBuilder.createPointerType(SubTy, Size, 0, - "__vtbl_ptr_type"); + llvm::DIType vtbl_ptr_type = + DBuilder.createPointerType(SubTy, Size, 0, "__vtbl_ptr_type"); VTablePtrType = DBuilder.createPointerType(vtbl_ptr_type, Size); return VTablePtrType; } @@ -1389,12 +1393,10 @@ StringRef CGDebugInfo::getVTableName(const CXXRecordDecl *RD) { return internString("_vptr$", RD->getNameAsString()); } - /// CollectVTableInfo - If the C++ class has vtable info then insert appropriate /// debug info entry in EltTys vector. -void CGDebugInfo:: -CollectVTableInfo(const CXXRecordDecl *RD, llvm::DIFile Unit, - SmallVectorImpl<llvm::Value *> &EltTys) { +void CGDebugInfo::CollectVTableInfo(const CXXRecordDecl *RD, llvm::DIFile Unit, + SmallVectorImpl<llvm::Metadata *> &EltTys) { const ASTRecordLayout &RL = CGM.getContext().getASTRecordLayout(RD); // If there is a primary base then it will hold vtable info. @@ -1406,11 +1408,9 @@ CollectVTableInfo(const CXXRecordDecl *RD, llvm::DIFile Unit, return; unsigned Size = CGM.getContext().getTypeSize(CGM.getContext().VoidPtrTy); - llvm::DIType VPTR - = DBuilder.createMemberType(Unit, getVTableName(RD), Unit, - 0, Size, 0, 0, - llvm::DIDescriptor::FlagArtificial, - getOrCreateVTablePtrType(Unit)); + llvm::DIType VPTR = DBuilder.createMemberType( + Unit, getVTableName(RD), Unit, 0, Size, 0, 0, + llvm::DIDescriptor::FlagArtificial, getOrCreateVTablePtrType(Unit)); EltTys.push_back(VPTR); } @@ -1436,15 +1436,14 @@ void CGDebugInfo::completeType(const EnumDecl *ED) { if (DebugKind <= CodeGenOptions::DebugLineTablesOnly) return; QualType Ty = CGM.getContext().getEnumType(ED); - void* TyPtr = Ty.getAsOpaquePtr(); + void *TyPtr = Ty.getAsOpaquePtr(); auto I = TypeCache.find(TyPtr); if (I == TypeCache.end() || - !llvm::DIType(cast<llvm::MDNode>(static_cast<llvm::Value *>(I->second))) - .isForwardDecl()) + !llvm::DIType(cast<llvm::MDNode>(I->second)).isForwardDecl()) return; llvm::DIType Res = CreateTypeDefinition(Ty->castAs<EnumType>()); assert(!Res.isForwardDecl()); - TypeCache[TyPtr] = Res; + TypeCache[TyPtr].reset(Res); } void CGDebugInfo::completeType(const RecordDecl *RD) { @@ -1471,15 +1470,14 @@ void CGDebugInfo::completeClassData(const RecordDecl *RD) { if (DebugKind <= CodeGenOptions::DebugLineTablesOnly) return; QualType Ty = CGM.getContext().getRecordType(RD); - void* TyPtr = Ty.getAsOpaquePtr(); + void *TyPtr = Ty.getAsOpaquePtr(); auto I = TypeCache.find(TyPtr); if (I != TypeCache.end() && - !llvm::DIType(cast<llvm::MDNode>(static_cast<llvm::Value *>(I->second))) - .isForwardDecl()) + !llvm::DIType(cast<llvm::MDNode>(I->second)).isForwardDecl()) return; llvm::DIType Res = CreateTypeDefinition(Ty->castAs<RecordType>()); assert(!Res.isForwardDecl()); - TypeCache[TyPtr] = Res; + TypeCache[TyPtr].reset(Res); } static bool hasExplicitMemberDefinition(CXXRecordDecl::method_iterator I, @@ -1563,11 +1561,11 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const RecordType *Ty) { CollectContainingType(CXXDecl, FwdDecl); // Push the struct on region stack. - LexicalBlockStack.push_back(&*FwdDecl); - RegionMap[Ty->getDecl()] = llvm::WeakVH(FwdDecl); + LexicalBlockStack.emplace_back(&*FwdDecl); + RegionMap[Ty->getDecl()].reset(FwdDecl); // Convert all the elements. - SmallVector<llvm::Value *, 16> EltTys; + SmallVector<llvm::Metadata *, 16> EltTys; // what about nested types? // Note: The split of CXXDecl information here is intentional, the @@ -1589,9 +1587,9 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const RecordType *Ty) { RegionMap.erase(Ty->getDecl()); llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys); - FwdDecl.setTypeArray(Elements); + DBuilder.replaceArrays(FwdDecl, Elements); - RegionMap[Ty->getDecl()] = llvm::WeakVH(FwdDecl); + RegionMap[Ty->getDecl()].reset(FwdDecl); return FwdDecl; } @@ -1602,7 +1600,6 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCObjectType *Ty, return getOrCreateType(Ty->getBaseType(), Unit); } - /// \return true if Getter has the default name for the property PD. static bool hasDefaultGetterName(const ObjCPropertyDecl *PD, const ObjCMethodDecl *Getter) { @@ -1612,7 +1609,7 @@ static bool hasDefaultGetterName(const ObjCPropertyDecl *PD, assert(Getter->getDeclName().isObjCZeroArgSelector()); return PD->getName() == - Getter->getDeclName().getObjCSelector().getNameForSlot(0); + Getter->getDeclName().getObjCSelector().getNameForSlot(0); } /// \return true if Setter has the default name for the property PD. @@ -1624,7 +1621,7 @@ static bool hasDefaultSetterName(const ObjCPropertyDecl *PD, assert(Setter->getDeclName().isObjCOneArgSelector()); return SelectorTable::constructSetterName(PD->getName()) == - Setter->getDeclName().getObjCSelector().getNameForSlot(0); + Setter->getDeclName().getObjCSelector().getNameForSlot(0); } /// CreateType - get objective-c interface type. @@ -1650,11 +1647,11 @@ llvm::DIType CGDebugInfo::CreateType(const ObjCInterfaceType *Ty, return FwdDecl; } - return CreateTypeDefinition(Ty, Unit); } -llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, llvm::DIFile Unit) { +llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, + llvm::DIFile Unit) { ObjCInterfaceDecl *ID = Ty->getDecl(); llvm::DIFile DefUnit = getOrCreateFile(ID->getLocation()); unsigned Line = getLineNumber(ID->getLocation()); @@ -1668,30 +1665,28 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, llvm if (ID->getImplementation()) Flags |= llvm::DIDescriptor::FlagObjcClassComplete; - llvm::DICompositeType RealDecl = - DBuilder.createStructType(Unit, ID->getName(), DefUnit, - Line, Size, Align, Flags, - llvm::DIType(), llvm::DIArray(), RuntimeLang); + llvm::DICompositeType RealDecl = DBuilder.createStructType( + Unit, ID->getName(), DefUnit, Line, Size, Align, Flags, llvm::DIType(), + llvm::DIArray(), RuntimeLang); QualType QTy(Ty, 0); - TypeCache[QTy.getAsOpaquePtr()] = RealDecl; + TypeCache[QTy.getAsOpaquePtr()].reset(RealDecl); // Push the struct on region stack. - LexicalBlockStack.push_back(static_cast<llvm::MDNode*>(RealDecl)); - RegionMap[Ty->getDecl()] = llvm::WeakVH(RealDecl); + LexicalBlockStack.emplace_back(static_cast<llvm::MDNode *>(RealDecl)); + RegionMap[Ty->getDecl()].reset(RealDecl); // Convert all the elements. - SmallVector<llvm::Value *, 16> EltTys; + SmallVector<llvm::Metadata *, 16> EltTys; ObjCInterfaceDecl *SClass = ID->getSuperClass(); if (SClass) { llvm::DIType SClassTy = - getOrCreateType(CGM.getContext().getObjCInterfaceType(SClass), Unit); + getOrCreateType(CGM.getContext().getObjCInterfaceType(SClass), Unit); if (!SClassTy.isValid()) return llvm::DIType(); - llvm::DIType InhTag = - DBuilder.createInheritance(RealDecl, SClassTy, 0, 0); + llvm::DIType InhTag = DBuilder.createInheritance(RealDecl, SClassTy, 0, 0); EltTys.push_back(InhTag); } @@ -1702,15 +1697,13 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, llvm unsigned PLine = getLineNumber(Loc); ObjCMethodDecl *Getter = PD->getGetterMethodDecl(); ObjCMethodDecl *Setter = PD->getSetterMethodDecl(); - llvm::MDNode *PropertyNode = - DBuilder.createObjCProperty(PD->getName(), - PUnit, PLine, - hasDefaultGetterName(PD, Getter) ? "" : - getSelectorName(PD->getGetterName()), - hasDefaultSetterName(PD, Setter) ? "" : - getSelectorName(PD->getSetterName()), - PD->getPropertyAttributes(), - getOrCreateType(PD->getType(), PUnit)); + llvm::MDNode *PropertyNode = DBuilder.createObjCProperty( + PD->getName(), PUnit, PLine, + hasDefaultGetterName(PD, Getter) ? "" + : getSelectorName(PD->getGetterName()), + hasDefaultSetterName(PD, Setter) ? "" + : getSelectorName(PD->getSetterName()), + PD->getPropertyAttributes(), getOrCreateType(PD->getType(), PUnit)); EltTys.push_back(PropertyNode); } @@ -1750,8 +1743,8 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, llvm // non-fragile ABI. For bitfields, use the bit offset into the first // byte of storage of the bitfield. For other fields, use zero. if (Field->isBitField()) { - FieldOffset = CGM.getObjCRuntime().ComputeBitfieldBitOffset( - CGM, ID, Field); + FieldOffset = + CGM.getObjCRuntime().ComputeBitfieldBitOffset(CGM, ID, Field); FieldOffset %= CGM.getContext().getCharWidth(); } else { FieldOffset = 0; @@ -1765,38 +1758,38 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty, llvm Flags = llvm::DIDescriptor::FlagProtected; else if (Field->getAccessControl() == ObjCIvarDecl::Private) Flags = llvm::DIDescriptor::FlagPrivate; + else if (Field->getAccessControl() == ObjCIvarDecl::Public) + Flags = llvm::DIDescriptor::FlagPublic; llvm::MDNode *PropertyNode = nullptr; if (ObjCImplementationDecl *ImpD = ID->getImplementation()) { if (ObjCPropertyImplDecl *PImpD = - ImpD->FindPropertyImplIvarDecl(Field->getIdentifier())) { + ImpD->FindPropertyImplIvarDecl(Field->getIdentifier())) { if (ObjCPropertyDecl *PD = PImpD->getPropertyDecl()) { SourceLocation Loc = PD->getLocation(); llvm::DIFile PUnit = getOrCreateFile(Loc); unsigned PLine = getLineNumber(Loc); ObjCMethodDecl *Getter = PD->getGetterMethodDecl(); ObjCMethodDecl *Setter = PD->getSetterMethodDecl(); - PropertyNode = - DBuilder.createObjCProperty(PD->getName(), - PUnit, PLine, - hasDefaultGetterName(PD, Getter) ? "" : - getSelectorName(PD->getGetterName()), - hasDefaultSetterName(PD, Setter) ? "" : - getSelectorName(PD->getSetterName()), - PD->getPropertyAttributes(), - getOrCreateType(PD->getType(), PUnit)); + PropertyNode = DBuilder.createObjCProperty( + PD->getName(), PUnit, PLine, + hasDefaultGetterName(PD, Getter) ? "" : getSelectorName( + PD->getGetterName()), + hasDefaultSetterName(PD, Setter) ? "" : getSelectorName( + PD->getSetterName()), + PD->getPropertyAttributes(), + getOrCreateType(PD->getType(), PUnit)); } } } - FieldTy = DBuilder.createObjCIVar(FieldName, FieldDefUnit, - FieldLine, FieldSize, FieldAlign, - FieldOffset, Flags, FieldTy, - PropertyNode); + FieldTy = DBuilder.createObjCIVar(FieldName, FieldDefUnit, FieldLine, + FieldSize, FieldAlign, FieldOffset, Flags, + FieldTy, PropertyNode); EltTys.push_back(FieldTy); } llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys); - RealDecl.setTypeArray(Elements); + DBuilder.replaceArrays(RealDecl, Elements); LexicalBlockStack.pop_back(); return RealDecl; @@ -1810,7 +1803,7 @@ llvm::DIType CGDebugInfo::CreateType(const VectorType *Ty, llvm::DIFile Unit) { // Use Count == -1 to express such arrays. Count = -1; - llvm::Value *Subscript = DBuilder.getOrCreateSubrange(0, Count); + llvm::Metadata *Subscript = DBuilder.getOrCreateSubrange(0, Count); llvm::DIArray SubscriptArray = DBuilder.getOrCreateArray(Subscript); uint64_t Size = CGM.getContext().getTypeSize(Ty); @@ -1819,8 +1812,7 @@ llvm::DIType CGDebugInfo::CreateType(const VectorType *Ty, llvm::DIFile Unit) { return DBuilder.createVectorType(Size, Align, ElementTy, SubscriptArray); } -llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, - llvm::DIFile Unit) { +llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, llvm::DIFile Unit) { uint64_t Size; uint64_t Align; @@ -1828,7 +1820,7 @@ llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(Ty)) { Size = 0; Align = - CGM.getContext().getTypeAlign(CGM.getContext().getBaseElementType(VAT)); + CGM.getContext().getTypeAlign(CGM.getContext().getBaseElementType(VAT)); } else if (Ty->isIncompleteArrayType()) { Size = 0; if (Ty->getElementType()->isIncompleteType()) @@ -1847,7 +1839,7 @@ llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, // Add the dimensions of the array. FIXME: This loses CV qualifiers from // interior arrays, do we care? Why aren't nested arrays represented the // obvious/recursive way? - SmallVector<llvm::Value *, 8> Subscripts; + SmallVector<llvm::Metadata *, 8> Subscripts; QualType EltTy(Ty, 0); while ((Ty = dyn_cast<ArrayType>(EltTy))) { // If the number of elements is known, then count is that number. Otherwise, @@ -1857,7 +1849,7 @@ llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, // struct foo { // int x[0]; // }; - int64_t Count = -1; // Count == -1 is an unbounded array. + int64_t Count = -1; // Count == -1 is an unbounded array. if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(Ty)) Count = CAT->getSize().getZExtValue(); @@ -1868,22 +1860,21 @@ llvm::DIType CGDebugInfo::CreateType(const ArrayType *Ty, llvm::DIArray SubscriptArray = DBuilder.getOrCreateArray(Subscripts); - llvm::DIType DbgTy = - DBuilder.createArrayType(Size, Align, getOrCreateType(EltTy, Unit), - SubscriptArray); + llvm::DIType DbgTy = DBuilder.createArrayType( + Size, Align, getOrCreateType(EltTy, Unit), SubscriptArray); return DbgTy; } llvm::DIType CGDebugInfo::CreateType(const LValueReferenceType *Ty, llvm::DIFile Unit) { - return CreatePointerLikeType(llvm::dwarf::DW_TAG_reference_type, - Ty, Ty->getPointeeType(), Unit); + return CreatePointerLikeType(llvm::dwarf::DW_TAG_reference_type, Ty, + Ty->getPointeeType(), Unit); } llvm::DIType CGDebugInfo::CreateType(const RValueReferenceType *Ty, llvm::DIFile Unit) { - return CreatePointerLikeType(llvm::dwarf::DW_TAG_rvalue_reference_type, - Ty, Ty->getPointeeType(), Unit); + return CreatePointerLikeType(llvm::dwarf::DW_TAG_rvalue_reference_type, Ty, + Ty->getPointeeType(), Unit); } llvm::DIType CGDebugInfo::CreateType(const MemberPointerType *Ty, @@ -1891,18 +1882,19 @@ llvm::DIType CGDebugInfo::CreateType(const MemberPointerType *Ty, llvm::DIType ClassType = getOrCreateType(QualType(Ty->getClass(), 0), U); if (!Ty->getPointeeType()->isFunctionType()) return DBuilder.createMemberPointerType( - getOrCreateType(Ty->getPointeeType(), U), ClassType); + getOrCreateType(Ty->getPointeeType(), U), ClassType, + CGM.getContext().getTypeSize(Ty)); const FunctionProtoType *FPT = - Ty->getPointeeType()->getAs<FunctionProtoType>(); - return DBuilder.createMemberPointerType(getOrCreateInstanceMethodType( - CGM.getContext().getPointerType(QualType(Ty->getClass(), - FPT->getTypeQuals())), - FPT, U), ClassType); + Ty->getPointeeType()->getAs<FunctionProtoType>(); + return DBuilder.createMemberPointerType( + getOrCreateInstanceMethodType(CGM.getContext().getPointerType(QualType( + Ty->getClass(), FPT->getTypeQuals())), + FPT, U), + ClassType, CGM.getContext().getTypeSize(Ty)); } -llvm::DIType CGDebugInfo::CreateType(const AtomicType *Ty, - llvm::DIFile U) { +llvm::DIType CGDebugInfo::CreateType(const AtomicType *Ty, llvm::DIFile U) { // Ignore the atomic wrapping // FIXME: What is the correct representation? return getOrCreateType(Ty->getValueType(), U); @@ -1931,7 +1923,9 @@ llvm::DIType CGDebugInfo::CreateEnumType(const EnumType *Ty) { llvm::DIType RetTy = DBuilder.createReplaceableForwardDecl( llvm::dwarf::DW_TAG_enumeration_type, EDName, EDContext, DefUnit, Line, 0, Size, Align, FullName); - ReplaceMap.push_back(std::make_pair(Ty, static_cast<llvm::Value *>(RetTy))); + ReplaceMap.emplace_back( + std::piecewise_construct, std::make_tuple(Ty), + std::make_tuple(static_cast<llvm::Metadata *>(RetTy))); return RetTy; } @@ -1950,12 +1944,11 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const EnumType *Ty) { SmallString<256> FullName = getUniqueTagTypeName(Ty, CGM, TheCU); // Create DIEnumerator elements for each enumerator. - SmallVector<llvm::Value *, 16> Enumerators; + SmallVector<llvm::Metadata *, 16> Enumerators; ED = ED->getDefinition(); for (const auto *Enum : ED->enumerators()) { - Enumerators.push_back( - DBuilder.createEnumerator(Enum->getName(), - Enum->getInitVal().getSExtValue())); + Enumerators.push_back(DBuilder.createEnumerator( + Enum->getName(), Enum->getInitVal().getSExtValue())); } // Return a CompositeType for the enum itself. @@ -1964,13 +1957,13 @@ llvm::DIType CGDebugInfo::CreateTypeDefinition(const EnumType *Ty) { llvm::DIFile DefUnit = getOrCreateFile(ED->getLocation()); unsigned Line = getLineNumber(ED->getLocation()); llvm::DIDescriptor EnumContext = - getContextDescriptor(cast<Decl>(ED->getDeclContext())); - llvm::DIType ClassTy = ED->isFixed() ? - getOrCreateType(ED->getIntegerType(), DefUnit) : llvm::DIType(); + getContextDescriptor(cast<Decl>(ED->getDeclContext())); + llvm::DIType ClassTy = ED->isFixed() + ? getOrCreateType(ED->getIntegerType(), DefUnit) + : llvm::DIType(); llvm::DIType DbgTy = - DBuilder.createEnumerationType(EnumContext, ED->getName(), DefUnit, Line, - Size, Align, EltArray, - ClassTy, FullName); + DBuilder.createEnumerationType(EnumContext, ED->getName(), DefUnit, Line, + Size, Align, EltArray, ClassTy, FullName); return DbgTy; } @@ -1991,7 +1984,8 @@ static QualType UnwrapTypeForDebugInfo(QualType T, const ASTContext &C) { if (Spec->isTypeAlias()) return C.getQualifiedType(T.getTypePtr(), Quals); T = Spec->desugar(); - break; } + break; + } case Type::TypeOfExpr: T = cast<TypeOfExprType>(T)->getUnderlyingExpr()->getType(); break; @@ -2018,8 +2012,7 @@ static QualType UnwrapTypeForDebugInfo(QualType T, const ASTContext &C) { break; case Type::Auto: QualType DT = cast<AutoType>(T)->getDeducedType(); - if (DT.isNull()) - return T; + assert(!DT.isNull() && "Undeduced types shouldn't reach here."); T = DT; break; } @@ -2039,7 +2032,7 @@ llvm::DIType CGDebugInfo::getTypeOrNull(QualType Ty) { auto it = TypeCache.find(Ty.getAsOpaquePtr()); if (it != TypeCache.end()) { // Verify that the debug info still exists. - if (llvm::Value *V = it->second) + if (llvm::Metadata *V = it->second) return llvm::DIType(cast<llvm::MDNode>(V)); } @@ -2071,10 +2064,10 @@ llvm::DIType CGDebugInfo::getOrCreateType(QualType Ty, llvm::DIFile Unit) { // Otherwise create the type. llvm::DIType Res = CreateTypeNode(Ty, Unit); - void* TyPtr = Ty.getAsOpaquePtr(); + void *TyPtr = Ty.getAsOpaquePtr(); // And update the type cache. - TypeCache[TyPtr] = Res; + TypeCache[TyPtr].reset(Res); return Res; } @@ -2096,8 +2089,8 @@ unsigned CGDebugInfo::Checksum(const ObjCInterfaceDecl *ID) { ObjCInterfaceDecl *CGDebugInfo::getObjCInterfaceDecl(QualType Ty) { switch (Ty->getTypeClass()) { case Type::ObjCObjectPointer: - return getObjCInterfaceDecl(cast<ObjCObjectPointerType>(Ty) - ->getPointeeType()); + return getObjCInterfaceDecl( + cast<ObjCObjectPointerType>(Ty)->getPointeeType()); case Type::ObjCInterface: return cast<ObjCInterfaceType>(Ty)->getDecl(); default: @@ -2111,8 +2104,6 @@ llvm::DIType CGDebugInfo::CreateTypeNode(QualType Ty, llvm::DIFile Unit) { if (Ty.hasLocalQualifiers()) return CreateQualifiedType(Ty, Unit); - const char *Diag = nullptr; - // Work out details of type. switch (Ty->getTypeClass()) { #define TYPE(Class, Base) @@ -2172,6 +2163,7 @@ llvm::DIType CGDebugInfo::CreateTypeNode(QualType Ty, llvm::DIFile Unit) { case Type::TemplateSpecialization: return CreateType(cast<TemplateSpecializationType>(Ty), Unit); + case Type::Auto: case Type::Attributed: case Type::Elaborated: case Type::Paren: @@ -2181,18 +2173,10 @@ llvm::DIType CGDebugInfo::CreateTypeNode(QualType Ty, llvm::DIFile Unit) { case Type::Decltype: case Type::UnaryTransform: case Type::PackExpansion: - llvm_unreachable("type should have been unwrapped!"); - case Type::Auto: - Diag = "auto"; break; } - assert(Diag && "Fall through without a diagnostic?"); - unsigned DiagID = CGM.getDiags().getCustomDiagID(DiagnosticsEngine::Error, - "debug information for %0 is not yet supported"); - CGM.getDiags().Report(DiagID) - << Diag; - return llvm::DIType(); + llvm_unreachable("type should have been unwrapped!"); } /// getOrCreateLimitedType - Get the type from the cache or create a new @@ -2206,7 +2190,8 @@ llvm::DIType CGDebugInfo::getOrCreateLimitedType(const RecordType *Ty, // We may have cached a forward decl when we could have created // a non-forward decl. Go ahead and create a non-forward decl // now. - if (T && !T.isForwardDecl()) return T; + if (T && !T.isForwardDecl()) + return T; // Otherwise create the type. llvm::DICompositeType Res = CreateLimitedType(Ty); @@ -2214,10 +2199,10 @@ llvm::DIType CGDebugInfo::getOrCreateLimitedType(const RecordType *Ty, // Propagate members from the declaration to the definition // CreateType(const RecordType*) will overwrite this with the members in the // correct order if the full type is needed. - Res.setTypeArray(T.getTypeArray()); + DBuilder.replaceArrays(Res, T.getElements()); // And update the type cache. - TypeCache[QTy.getAsOpaquePtr()] = Res; + TypeCache[QTy.getAsOpaquePtr()].reset(Res); return Res; } @@ -2237,7 +2222,7 @@ llvm::DICompositeType CGDebugInfo::CreateLimitedType(const RecordType *Ty) { // just return that. llvm::DICompositeType T(getTypeOrNull(CGM.getContext().getRecordType(RD))); if (T && (!T.isForwardDecl() || !RD->getDefinition())) - return T; + return T; // If this is just a forward or incomplete declaration, construct an // appropriately marked node and just return it. @@ -2252,29 +2237,26 @@ llvm::DICompositeType CGDebugInfo::CreateLimitedType(const RecordType *Ty) { SmallString<256> FullName = getUniqueTagTypeName(Ty, CGM, TheCU); if (RD->isUnion()) - RealDecl = DBuilder.createUnionType(RDContext, RDName, DefUnit, Line, - Size, Align, 0, llvm::DIArray(), 0, - FullName); + RealDecl = DBuilder.createUnionType(RDContext, RDName, DefUnit, Line, Size, + Align, 0, llvm::DIArray(), 0, FullName); else if (RD->isClass()) { // FIXME: This could be a struct type giving a default visibility different // than C++ class type, but needs llvm metadata changes first. - RealDecl = DBuilder.createClassType(RDContext, RDName, DefUnit, Line, - Size, Align, 0, 0, llvm::DIType(), - llvm::DIArray(), llvm::DIType(), - llvm::DIArray(), FullName); + RealDecl = DBuilder.createClassType( + RDContext, RDName, DefUnit, Line, Size, Align, 0, 0, llvm::DIType(), + llvm::DIArray(), llvm::DIType(), llvm::DIArray(), FullName); } else - RealDecl = DBuilder.createStructType(RDContext, RDName, DefUnit, Line, - Size, Align, 0, llvm::DIType(), - llvm::DIArray(), 0, llvm::DIType(), - FullName); + RealDecl = DBuilder.createStructType( + RDContext, RDName, DefUnit, Line, Size, Align, 0, llvm::DIType(), + llvm::DIArray(), 0, llvm::DIType(), FullName); - RegionMap[Ty->getDecl()] = llvm::WeakVH(RealDecl); - TypeCache[QualType(Ty, 0).getAsOpaquePtr()] = RealDecl; + RegionMap[Ty->getDecl()].reset(RealDecl); + TypeCache[QualType(Ty, 0).getAsOpaquePtr()].reset(RealDecl); if (const ClassTemplateSpecializationDecl *TSpecial = dyn_cast<ClassTemplateSpecializationDecl>(RD)) - RealDecl.setTypeArray(llvm::DIArray(), - CollectCXXTemplateParams(TSpecial, DefUnit)); + DBuilder.replaceArrays(RealDecl, llvm::DIArray(), + CollectCXXTemplateParams(TSpecial, DefUnit)); return RealDecl; } @@ -2299,24 +2281,148 @@ void CGDebugInfo::CollectContainingType(const CXXRecordDecl *RD, } else if (RD->isDynamicClass()) ContainingType = RealDecl; - RealDecl.setContainingType(ContainingType); + DBuilder.replaceVTableHolder(RealDecl, ContainingType); } /// CreateMemberType - Create new member and increase Offset by FType's size. llvm::DIType CGDebugInfo::CreateMemberType(llvm::DIFile Unit, QualType FType, - StringRef Name, - uint64_t *Offset) { + StringRef Name, uint64_t *Offset) { llvm::DIType FieldTy = CGDebugInfo::getOrCreateType(FType, Unit); uint64_t FieldSize = CGM.getContext().getTypeSize(FType); unsigned FieldAlign = CGM.getContext().getTypeAlign(FType); - llvm::DIType Ty = DBuilder.createMemberType(Unit, Name, Unit, 0, - FieldSize, FieldAlign, - *Offset, 0, FieldTy); + llvm::DIType Ty = DBuilder.createMemberType(Unit, Name, Unit, 0, FieldSize, + FieldAlign, *Offset, 0, FieldTy); *Offset += FieldSize; return Ty; } -llvm::DIScope CGDebugInfo::getDeclarationOrDefinition(const Decl *D) { +void CGDebugInfo::collectFunctionDeclProps(GlobalDecl GD, + llvm::DIFile Unit, + StringRef &Name, StringRef &LinkageName, + llvm::DIDescriptor &FDContext, + llvm::DIArray &TParamsArray, + unsigned &Flags) { + const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl()); + Name = getFunctionName(FD); + // Use mangled name as linkage name for C/C++ functions. + if (FD->hasPrototype()) { + LinkageName = CGM.getMangledName(GD); + Flags |= llvm::DIDescriptor::FlagPrototyped; + } + // No need to replicate the linkage name if it isn't different from the + // subprogram name, no need to have it at all unless coverage is enabled or + // debug is set to more than just line tables. + if (LinkageName == Name || + (!CGM.getCodeGenOpts().EmitGcovArcs && + !CGM.getCodeGenOpts().EmitGcovNotes && + DebugKind <= CodeGenOptions::DebugLineTablesOnly)) + LinkageName = StringRef(); + + if (DebugKind >= CodeGenOptions::LimitedDebugInfo) { + if (const NamespaceDecl *NSDecl = + dyn_cast_or_null<NamespaceDecl>(FD->getDeclContext())) + FDContext = getOrCreateNameSpace(NSDecl); + else if (const RecordDecl *RDecl = + dyn_cast_or_null<RecordDecl>(FD->getDeclContext())) + FDContext = getContextDescriptor(cast<Decl>(RDecl)); + // Collect template parameters. + TParamsArray = CollectFunctionTemplateParams(FD, Unit); + } +} + +void CGDebugInfo::collectVarDeclProps(const VarDecl *VD, llvm::DIFile &Unit, + unsigned &LineNo, QualType &T, + StringRef &Name, StringRef &LinkageName, + llvm::DIDescriptor &VDContext) { + Unit = getOrCreateFile(VD->getLocation()); + LineNo = getLineNumber(VD->getLocation()); + + setLocation(VD->getLocation()); + + T = VD->getType(); + if (T->isIncompleteArrayType()) { + // CodeGen turns int[] into int[1] so we'll do the same here. + llvm::APInt ConstVal(32, 1); + QualType ET = CGM.getContext().getAsArrayType(T)->getElementType(); + + T = CGM.getContext().getConstantArrayType(ET, ConstVal, + ArrayType::Normal, 0); + } + + Name = VD->getName(); + if (VD->getDeclContext() && !isa<FunctionDecl>(VD->getDeclContext()) && + !isa<ObjCMethodDecl>(VD->getDeclContext())) + LinkageName = CGM.getMangledName(VD); + if (LinkageName == Name) + LinkageName = StringRef(); + + // Since we emit declarations (DW_AT_members) for static members, place the + // definition of those static members in the namespace they were declared in + // in the source code (the lexical decl context). + // FIXME: Generalize this for even non-member global variables where the + // declaration and definition may have different lexical decl contexts, once + // we have support for emitting declarations of (non-member) global variables. + VDContext = getContextDescriptor( + dyn_cast<Decl>(VD->isStaticDataMember() ? VD->getLexicalDeclContext() + : VD->getDeclContext())); +} + +llvm::DISubprogram +CGDebugInfo::getFunctionForwardDeclaration(const FunctionDecl *FD) { + llvm::DIArray TParamsArray; + StringRef Name, LinkageName; + unsigned Flags = 0; + SourceLocation Loc = FD->getLocation(); + llvm::DIFile Unit = getOrCreateFile(Loc); + llvm::DIDescriptor DContext(Unit); + unsigned Line = getLineNumber(Loc); + + collectFunctionDeclProps(FD, Unit, Name, LinkageName, DContext, + TParamsArray, Flags); + // Build function type. + SmallVector<QualType, 16> ArgTypes; + for (const ParmVarDecl *Parm: FD->parameters()) + ArgTypes.push_back(Parm->getType()); + QualType FnType = + CGM.getContext().getFunctionType(FD->getReturnType(), ArgTypes, + FunctionProtoType::ExtProtoInfo()); + llvm::DISubprogram SP = + DBuilder.createTempFunctionFwdDecl(DContext, Name, LinkageName, Unit, Line, + getOrCreateFunctionType(FD, FnType, Unit), + !FD->isExternallyVisible(), + false /*declaration*/, 0, Flags, + CGM.getLangOpts().Optimize, nullptr, + TParamsArray, getFunctionDeclaration(FD)); + const FunctionDecl *CanonDecl = cast<FunctionDecl>(FD->getCanonicalDecl()); + FwdDeclReplaceMap.emplace_back( + std::piecewise_construct, std::make_tuple(CanonDecl), + std::make_tuple(static_cast<llvm::Metadata *>(SP))); + return SP; +} + +llvm::DIGlobalVariable +CGDebugInfo::getGlobalVariableForwardDeclaration(const VarDecl *VD) { + QualType T; + StringRef Name, LinkageName; + SourceLocation Loc = VD->getLocation(); + llvm::DIFile Unit = getOrCreateFile(Loc); + llvm::DIDescriptor DContext(Unit); + unsigned Line = getLineNumber(Loc); + + collectVarDeclProps(VD, Unit, Line, T, Name, LinkageName, DContext); + llvm::DIGlobalVariable GV = + DBuilder.createTempGlobalVariableFwdDecl(DContext, Name, LinkageName, Unit, + Line, getOrCreateType(T, Unit), + !VD->isExternallyVisible(), + nullptr, nullptr); + FwdDeclReplaceMap.emplace_back( + std::piecewise_construct, + std::make_tuple(cast<VarDecl>(VD->getCanonicalDecl())), + std::make_tuple(static_cast<llvm::Metadata *>(GV))); + return GV; +} + +llvm::DIDescriptor CGDebugInfo::getDeclarationOrDefinition(const Decl *D) { // We only need a declaration (not a definition) of the type - so use whatever // we would otherwise do to get a type for a pointee. (forward declarations in // limited debug info, full definitions (if the type definition is available) @@ -2324,19 +2430,19 @@ llvm::DIScope CGDebugInfo::getDeclarationOrDefinition(const Decl *D) { if (const TypeDecl *TD = dyn_cast<TypeDecl>(D)) return getOrCreateType(CGM.getContext().getTypeDeclType(TD), getOrCreateFile(TD->getLocation())); - // Otherwise fall back to a fairly rudimentary cache of existing declarations. - // This doesn't handle providing declarations (for functions or variables) for - // entities without definitions in this TU, nor when the definition proceeds - // the call to this function. - // FIXME: This should be split out into more specific maps with support for - // emitting forward declarations and merging definitions with declarations, - // the same way as we do for types. - llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator I = - DeclCache.find(D->getCanonicalDecl()); - if (I == DeclCache.end()) - return llvm::DIScope(); - llvm::Value *V = I->second; - return llvm::DIScope(dyn_cast_or_null<llvm::MDNode>(V)); + auto I = DeclCache.find(D->getCanonicalDecl()); + + if (I != DeclCache.end()) + return llvm::DIDescriptor(dyn_cast_or_null<llvm::MDNode>(I->second)); + + // No definition for now. Emit a forward definition that might be + // merged with a potential upcoming definition. + if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) + return getFunctionForwardDeclaration(FD); + else if (const auto *VD = dyn_cast<VarDecl>(D)) + return getGlobalVariableForwardDeclaration(VD); + + return llvm::DIDescriptor(); } /// getFunctionDeclaration - Return debug info descriptor to describe method @@ -2346,13 +2452,13 @@ llvm::DISubprogram CGDebugInfo::getFunctionDeclaration(const Decl *D) { return llvm::DISubprogram(); const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); - if (!FD) return llvm::DISubprogram(); + if (!FD) + return llvm::DISubprogram(); // Setup context. llvm::DIScope S = getContextDescriptor(cast<Decl>(D->getDeclContext())); - llvm::DenseMap<const FunctionDecl *, llvm::WeakVH>::iterator - MI = SPCache.find(FD->getCanonicalDecl()); + auto MI = SPCache.find(FD->getCanonicalDecl()); if (MI == SPCache.end()) { if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD->getCanonicalDecl())) { @@ -2363,18 +2469,15 @@ llvm::DISubprogram CGDebugInfo::getFunctionDeclaration(const Decl *D) { } } if (MI != SPCache.end()) { - llvm::Value *V = MI->second; - llvm::DISubprogram SP(dyn_cast_or_null<llvm::MDNode>(V)); + llvm::DISubprogram SP(dyn_cast_or_null<llvm::MDNode>(MI->second)); if (SP.isSubprogram() && !SP.isDefinition()) return SP; } for (auto NextFD : FD->redecls()) { - llvm::DenseMap<const FunctionDecl *, llvm::WeakVH>::iterator - MI = SPCache.find(NextFD->getCanonicalDecl()); + auto MI = SPCache.find(NextFD->getCanonicalDecl()); if (MI != SPCache.end()) { - llvm::Value *V = MI->second; - llvm::DISubprogram SP(dyn_cast_or_null<llvm::MDNode>(V)); + llvm::DISubprogram SP(dyn_cast_or_null<llvm::MDNode>(MI->second)); if (SP.isSubprogram() && !SP.isDefinition()) return SP; } @@ -2392,13 +2495,14 @@ llvm::DICompositeType CGDebugInfo::getOrCreateFunctionType(const Decl *D, // llvm::DISubprogram::Verify() would return false, and // subprogram DIE will miss DW_AT_decl_file and // DW_AT_decl_line fields. - return DBuilder.createSubroutineType(F, DBuilder.getOrCreateArray(None)); + return DBuilder.createSubroutineType(F, + DBuilder.getOrCreateTypeArray(None)); if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) return getOrCreateMethodType(Method, F); if (const ObjCMethodDecl *OMethod = dyn_cast<ObjCMethodDecl>(D)) { // Add "self" and "_cmd" - SmallVector<llvm::Value *, 16> Elts; + SmallVector<llvm::Metadata *, 16> Elts; // First element is always return type. For 'void' functions it is NULL. QualType ResultTy = OMethod->getReturnType(); @@ -2406,7 +2510,7 @@ llvm::DICompositeType CGDebugInfo::getOrCreateFunctionType(const Decl *D, // Replace the instancetype keyword with the actual type. if (ResultTy == CGM.getContext().getObjCInstanceType()) ResultTy = CGM.getContext().getPointerType( - QualType(OMethod->getClassInterface()->getTypeForDecl(), 0)); + QualType(OMethod->getClassInterface()->getTypeForDecl(), 0)); Elts.push_back(getOrCreateType(ResultTy, F)); // "self" pointer is always first argument. @@ -2419,8 +2523,11 @@ llvm::DICompositeType CGDebugInfo::getOrCreateFunctionType(const Decl *D, // Get rest of the arguments. for (const auto *PI : OMethod->params()) Elts.push_back(getOrCreateType(PI->getType(), F)); + // Variadic methods need a special marker at the end of the type list. + if (OMethod->isVariadic()) + Elts.push_back(DBuilder.createUnspecifiedParameter()); - llvm::DIArray EltTypeArray = DBuilder.getOrCreateArray(Elts); + llvm::DITypeArray EltTypeArray = DBuilder.getOrCreateTypeArray(Elts); return DBuilder.createSubroutineType(F, EltTypeArray); } @@ -2428,13 +2535,13 @@ llvm::DICompositeType CGDebugInfo::getOrCreateFunctionType(const Decl *D, // unspecified parameter. if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) if (FD->isVariadic()) { - SmallVector<llvm::Value *, 16> EltTys; + SmallVector<llvm::Metadata *, 16> EltTys; EltTys.push_back(getOrCreateType(FD->getReturnType(), F)); if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(FnType)) for (unsigned i = 0, e = FPT->getNumParams(); i != e; ++i) EltTys.push_back(getOrCreateType(FPT->getParamType(i), F)); EltTys.push_back(DBuilder.createUnspecifiedParameter()); - llvm::DIArray EltTypeArray = DBuilder.getOrCreateArray(EltTys); + llvm::DITypeArray EltTypeArray = DBuilder.getOrCreateTypeArray(EltTys); return DBuilder.createSubroutineType(F, EltTypeArray); } @@ -2442,12 +2549,9 @@ llvm::DICompositeType CGDebugInfo::getOrCreateFunctionType(const Decl *D, } /// EmitFunctionStart - Constructs the debug code for entering a function. -void CGDebugInfo::EmitFunctionStart(GlobalDecl GD, - SourceLocation Loc, - SourceLocation ScopeLoc, - QualType FnType, - llvm::Function *Fn, - CGBuilderTy &Builder) { +void CGDebugInfo::EmitFunctionStart(GlobalDecl GD, SourceLocation Loc, + SourceLocation ScopeLoc, QualType FnType, + llvm::Function *Fn, CGBuilderTy &Builder) { StringRef Name; StringRef LinkageName; @@ -2466,44 +2570,18 @@ void CGDebugInfo::EmitFunctionStart(GlobalDecl GD, LinkageName = Fn->getName(); } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { // If there is a DISubprogram for this function available then use it. - llvm::DenseMap<const FunctionDecl *, llvm::WeakVH>::iterator - FI = SPCache.find(FD->getCanonicalDecl()); + auto FI = SPCache.find(FD->getCanonicalDecl()); if (FI != SPCache.end()) { - llvm::Value *V = FI->second; - llvm::DIDescriptor SP(dyn_cast_or_null<llvm::MDNode>(V)); + llvm::DIDescriptor SP(dyn_cast_or_null<llvm::MDNode>(FI->second)); if (SP.isSubprogram() && llvm::DISubprogram(SP).isDefinition()) { llvm::MDNode *SPN = SP; - LexicalBlockStack.push_back(SPN); - RegionMap[D] = llvm::WeakVH(SP); + LexicalBlockStack.emplace_back(SPN); + RegionMap[D].reset(SP); return; } } - Name = getFunctionName(FD); - // Use mangled name as linkage name for C/C++ functions. - if (FD->hasPrototype()) { - LinkageName = CGM.getMangledName(GD); - Flags |= llvm::DIDescriptor::FlagPrototyped; - } - // No need to replicate the linkage name if it isn't different from the - // subprogram name, no need to have it at all unless coverage is enabled or - // debug is set to more than just line tables. - if (LinkageName == Name || - (!CGM.getCodeGenOpts().EmitGcovArcs && - !CGM.getCodeGenOpts().EmitGcovNotes && - DebugKind <= CodeGenOptions::DebugLineTablesOnly)) - LinkageName = StringRef(); - - if (DebugKind >= CodeGenOptions::LimitedDebugInfo) { - if (const NamespaceDecl *NSDecl = - dyn_cast_or_null<NamespaceDecl>(FD->getDeclContext())) - FDContext = getOrCreateNameSpace(NSDecl); - else if (const RecordDecl *RDecl = - dyn_cast_or_null<RecordDecl>(FD->getDeclContext())) - FDContext = getContextDescriptor(cast<Decl>(RDecl)); - - // Collect template parameters. - TParamsArray = CollectFunctionTemplateParams(FD, Unit); - } + collectFunctionDeclProps(GD, Unit, Name, LinkageName, FDContext, + TParamsArray, Flags); } else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) { Name = getObjCMethodName(OMD); Flags |= llvm::DIDescriptor::FlagPrototyped; @@ -2529,22 +2607,23 @@ void CGDebugInfo::EmitFunctionStart(GlobalDecl GD, // FunctionDecls. When/if we fix this we can have FDContext be TheCU/null for // all subprograms instead of the actual context since subprogram definitions // are emitted as CU level entities by the backend. - llvm::DISubprogram SP = - DBuilder.createFunction(FDContext, Name, LinkageName, Unit, LineNo, - getOrCreateFunctionType(D, FnType, Unit), - Fn->hasInternalLinkage(), true /*definition*/, - ScopeLine, Flags, - CGM.getLangOpts().Optimize, Fn, TParamsArray, - getFunctionDeclaration(D)); - if (HasDecl) - DeclCache.insert(std::make_pair(D->getCanonicalDecl(), llvm::WeakVH(SP))); + llvm::DISubprogram SP = DBuilder.createFunction( + FDContext, Name, LinkageName, Unit, LineNo, + getOrCreateFunctionType(D, FnType, Unit), Fn->hasInternalLinkage(), + true /*definition*/, ScopeLine, Flags, CGM.getLangOpts().Optimize, Fn, + TParamsArray, getFunctionDeclaration(D)); + // We might get here with a VarDecl in the case we're generating + // code for the initialization of globals. Do not record these decls + // as they will overwrite the actual VarDecl Decl in the cache. + if (HasDecl && isa<FunctionDecl>(D)) + DeclCache[D->getCanonicalDecl()].reset(static_cast<llvm::Metadata *>(SP)); // Push the function onto the lexical block stack. llvm::MDNode *SPN = SP; - LexicalBlockStack.push_back(SPN); + LexicalBlockStack.emplace_back(SPN); if (HasDecl) - RegionMap[D] = llvm::WeakVH(SP); + RegionMap[D].reset(SP); } /// EmitLocation - Emit metadata to indicate a change in line/column @@ -2555,38 +2634,25 @@ void CGDebugInfo::EmitLocation(CGBuilderTy &Builder, SourceLocation Loc, // Update our current location setLocation(Loc); - if (CurLoc.isInvalid() || CurLoc.isMacroID()) return; - - // Don't bother if things are the same as last time. - SourceManager &SM = CGM.getContext().getSourceManager(); - if (CurLoc == PrevLoc || - SM.getExpansionLoc(CurLoc) == SM.getExpansionLoc(PrevLoc)) - // New Builder may not be in sync with CGDebugInfo. - if (!Builder.getCurrentDebugLocation().isUnknown() && - Builder.getCurrentDebugLocation().getScope(CGM.getLLVMContext()) == - LexicalBlockStack.back()) - return; - - // Update last state. - PrevLoc = CurLoc; + if (CurLoc.isInvalid() || CurLoc.isMacroID()) + return; llvm::MDNode *Scope = LexicalBlockStack.back(); - Builder.SetCurrentDebugLocation(llvm::DebugLoc::get - (getLineNumber(CurLoc), - getColumnNumber(CurLoc, ForceColumnInfo), - Scope)); + Builder.SetCurrentDebugLocation(llvm::DebugLoc::get( + getLineNumber(CurLoc), getColumnNumber(CurLoc, ForceColumnInfo), Scope)); } /// CreateLexicalBlock - Creates a new lexical block node and pushes it on /// the stack. void CGDebugInfo::CreateLexicalBlock(SourceLocation Loc) { + llvm::MDNode *Back = nullptr; + if (!LexicalBlockStack.empty()) + Back = LexicalBlockStack.back().get(); llvm::DIDescriptor D = DBuilder.createLexicalBlock( - llvm::DIDescriptor(LexicalBlockStack.empty() ? nullptr - : LexicalBlockStack.back()), - getOrCreateFile(CurLoc), getLineNumber(CurLoc), getColumnNumber(CurLoc), - 0); + llvm::DIDescriptor(Back), getOrCreateFile(CurLoc), getLineNumber(CurLoc), + getColumnNumber(CurLoc)); llvm::MDNode *DN = D; - LexicalBlockStack.push_back(DN); + LexicalBlockStack.emplace_back(DN); } /// EmitLexicalBlockStart - Constructs the debug code for entering a declarative @@ -2596,13 +2662,15 @@ void CGDebugInfo::EmitLexicalBlockStart(CGBuilderTy &Builder, // Set our current location. setLocation(Loc); + // Emit a line table change for the current location inside the new scope. + Builder.SetCurrentDebugLocation(llvm::DebugLoc::get( + getLineNumber(Loc), getColumnNumber(Loc), LexicalBlockStack.back())); + + if (DebugKind <= CodeGenOptions::DebugLineTablesOnly) + return; + // Create a new lexical block and push it on the stack. CreateLexicalBlock(Loc); - - // Emit a line table change for the current location inside the new scope. - Builder.SetCurrentDebugLocation(llvm::DebugLoc::get(getLineNumber(Loc), - getColumnNumber(Loc), - LexicalBlockStack.back())); } /// EmitLexicalBlockEnd - Constructs the debug code for exiting a declarative @@ -2614,6 +2682,9 @@ void CGDebugInfo::EmitLexicalBlockEnd(CGBuilderTy &Builder, // Provide an entry in the line table for the end of the block. EmitLocation(Builder, Loc); + if (DebugKind <= CodeGenOptions::DebugLineTablesOnly) + return; + LexicalBlockStack.pop_back(); } @@ -2624,8 +2695,11 @@ void CGDebugInfo::EmitFunctionEnd(CGBuilderTy &Builder) { assert(RCount <= LexicalBlockStack.size() && "Region stack mismatch"); // Pop all regions for this function. - while (LexicalBlockStack.size() != RCount) - EmitLexicalBlockEnd(Builder, CurLoc); + while (LexicalBlockStack.size() != RCount) { + // Provide an entry in the line table for the end of the block. + EmitLocation(Builder, CurLoc); + LexicalBlockStack.pop_back(); + } FnBeginRegionCount.pop_back(); } @@ -2634,7 +2708,7 @@ void CGDebugInfo::EmitFunctionEnd(CGBuilderTy &Builder) { llvm::DIType CGDebugInfo::EmitTypeForVarWithBlocksAttr(const VarDecl *VD, uint64_t *XOffset) { - SmallVector<llvm::Value *, 5> EltTys; + SmallVector<llvm::Metadata *, 5> EltTys; QualType FType; uint64_t FieldSize, FieldOffset; unsigned FieldAlign; @@ -2653,31 +2727,29 @@ llvm::DIType CGDebugInfo::EmitTypeForVarWithBlocksAttr(const VarDecl *VD, bool HasCopyAndDispose = CGM.getContext().BlockRequiresCopying(Type, VD); if (HasCopyAndDispose) { FType = CGM.getContext().getPointerType(CGM.getContext().VoidTy); - EltTys.push_back(CreateMemberType(Unit, FType, "__copy_helper", - &FieldOffset)); - EltTys.push_back(CreateMemberType(Unit, FType, "__destroy_helper", - &FieldOffset)); + EltTys.push_back( + CreateMemberType(Unit, FType, "__copy_helper", &FieldOffset)); + EltTys.push_back( + CreateMemberType(Unit, FType, "__destroy_helper", &FieldOffset)); } bool HasByrefExtendedLayout; Qualifiers::ObjCLifetime Lifetime; - if (CGM.getContext().getByrefLifetime(Type, - Lifetime, HasByrefExtendedLayout) - && HasByrefExtendedLayout) { + if (CGM.getContext().getByrefLifetime(Type, Lifetime, + HasByrefExtendedLayout) && + HasByrefExtendedLayout) { FType = CGM.getContext().getPointerType(CGM.getContext().VoidTy); - EltTys.push_back(CreateMemberType(Unit, FType, - "__byref_variable_layout", - &FieldOffset)); + EltTys.push_back( + CreateMemberType(Unit, FType, "__byref_variable_layout", &FieldOffset)); } CharUnits Align = CGM.getContext().getDeclAlign(VD); if (Align > CGM.getContext().toCharUnitsFromBits( - CGM.getTarget().getPointerAlign(0))) { - CharUnits FieldOffsetInBytes - = CGM.getContext().toCharUnitsFromBits(FieldOffset); - CharUnits AlignedOffsetInBytes - = FieldOffsetInBytes.RoundUpToAlignment(Align); - CharUnits NumPaddingBytes - = AlignedOffsetInBytes - FieldOffsetInBytes; + CGM.getTarget().getPointerAlign(0))) { + CharUnits FieldOffsetInBytes = + CGM.getContext().toCharUnitsFromBits(FieldOffset); + CharUnits AlignedOffsetInBytes = + FieldOffsetInBytes.RoundUpToAlignment(Align); + CharUnits NumPaddingBytes = AlignedOffsetInBytes - FieldOffsetInBytes; if (NumPaddingBytes.isPositive()) { llvm::APInt pad(32, NumPaddingBytes.getQuantity()); @@ -2693,9 +2765,8 @@ llvm::DIType CGDebugInfo::EmitTypeForVarWithBlocksAttr(const VarDecl *VD, FieldAlign = CGM.getContext().toBits(Align); *XOffset = FieldOffset; - FieldTy = DBuilder.createMemberType(Unit, VD->getName(), Unit, - 0, FieldSize, FieldAlign, - FieldOffset, 0, FieldTy); + FieldTy = DBuilder.createMemberType(Unit, VD->getName(), Unit, 0, FieldSize, + FieldAlign, FieldOffset, 0, FieldTy); EltTys.push_back(FieldTy); FieldOffset += FieldSize; @@ -2709,8 +2780,8 @@ llvm::DIType CGDebugInfo::EmitTypeForVarWithBlocksAttr(const VarDecl *VD, /// EmitDeclare - Emit local variable declaration debug info. void CGDebugInfo::EmitDeclare(const VarDecl *VD, llvm::dwarf::LLVMConstants Tag, - llvm::Value *Storage, - unsigned ArgNo, CGBuilderTy &Builder) { + llvm::Value *Storage, unsigned ArgNo, + CGBuilderTy &Builder) { assert(DebugKind >= CodeGenOptions::LimitedDebugInfo); assert(!LexicalBlockStack.empty() && "Region stack mismatch, stack empty!"); @@ -2760,29 +2831,26 @@ void CGDebugInfo::EmitDeclare(const VarDecl *VD, llvm::dwarf::LLVMConstants Tag, if (!Name.empty()) { if (VD->hasAttr<BlocksAttr>()) { CharUnits offset = CharUnits::fromQuantity(32); - SmallVector<llvm::Value *, 9> addr; - llvm::Type *Int64Ty = CGM.Int64Ty; - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpPlus)); + SmallVector<int64_t, 9> addr; + addr.push_back(llvm::dwarf::DW_OP_plus); // offset of __forwarding field offset = CGM.getContext().toCharUnitsFromBits( - CGM.getTarget().getPointerWidth(0)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, offset.getQuantity())); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpDeref)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpPlus)); + CGM.getTarget().getPointerWidth(0)); + addr.push_back(offset.getQuantity()); + addr.push_back(llvm::dwarf::DW_OP_deref); + addr.push_back(llvm::dwarf::DW_OP_plus); // offset of x field offset = CGM.getContext().toCharUnitsFromBits(XOffset); - addr.push_back(llvm::ConstantInt::get(Int64Ty, offset.getQuantity())); + addr.push_back(offset.getQuantity()); // Create the descriptor for the variable. - llvm::DIVariable D = - DBuilder.createComplexVariable(Tag, - llvm::DIDescriptor(Scope), - VD->getName(), Unit, Line, Ty, - addr, ArgNo); + llvm::DIVariable D = DBuilder.createLocalVariable( + Tag, llvm::DIDescriptor(Scope), VD->getName(), Unit, Line, Ty, ArgNo); // Insert an llvm.dbg.declare into the current block. llvm::Instruction *Call = - DBuilder.insertDeclare(Storage, D, Builder.GetInsertBlock()); + DBuilder.insertDeclare(Storage, D, DBuilder.createExpression(addr), + Builder.GetInsertBlock()); Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope)); return; } else if (isa<VariableArrayType>(VD->getType())) @@ -2801,15 +2869,13 @@ void CGDebugInfo::EmitDeclare(const VarDecl *VD, llvm::dwarf::LLVMConstants Tag, continue; // Use VarDecl's Tag, Scope and Line number. - llvm::DIVariable D = - DBuilder.createLocalVariable(Tag, llvm::DIDescriptor(Scope), - FieldName, Unit, Line, FieldTy, - CGM.getLangOpts().Optimize, Flags, - ArgNo); + llvm::DIVariable D = DBuilder.createLocalVariable( + Tag, llvm::DIDescriptor(Scope), FieldName, Unit, Line, FieldTy, + CGM.getLangOpts().Optimize, Flags, ArgNo); // Insert an llvm.dbg.declare into the current block. - llvm::Instruction *Call = - DBuilder.insertDeclare(Storage, D, Builder.GetInsertBlock()); + llvm::Instruction *Call = DBuilder.insertDeclare( + Storage, D, DBuilder.createExpression(), Builder.GetInsertBlock()); Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope)); } return; @@ -2817,14 +2883,13 @@ void CGDebugInfo::EmitDeclare(const VarDecl *VD, llvm::dwarf::LLVMConstants Tag, } // Create the descriptor for the variable. - llvm::DIVariable D = - DBuilder.createLocalVariable(Tag, llvm::DIDescriptor(Scope), - Name, Unit, Line, Ty, - CGM.getLangOpts().Optimize, Flags, ArgNo); + llvm::DIVariable D = DBuilder.createLocalVariable( + Tag, llvm::DIDescriptor(Scope), Name, Unit, Line, Ty, + CGM.getLangOpts().Optimize, Flags, ArgNo); // Insert an llvm.dbg.declare into the current block. - llvm::Instruction *Call = - DBuilder.insertDeclare(Storage, D, Builder.GetInsertBlock()); + llvm::Instruction *Call = DBuilder.insertDeclare( + Storage, D, DBuilder.createExpression(), Builder.GetInsertBlock()); Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope)); } @@ -2844,14 +2909,14 @@ void CGDebugInfo::EmitDeclareOfAutoVariable(const VarDecl *VD, llvm::DIType CGDebugInfo::CreateSelfType(const QualType &QualTy, llvm::DIType Ty) { llvm::DIType CachedTy = getTypeOrNull(QualTy); - if (CachedTy) Ty = CachedTy; + if (CachedTy) + Ty = CachedTy; return DBuilder.createObjectPointerType(Ty); } -void CGDebugInfo::EmitDeclareOfBlockDeclRefVariable(const VarDecl *VD, - llvm::Value *Storage, - CGBuilderTy &Builder, - const CGBlockInfo &blockInfo) { +void CGDebugInfo::EmitDeclareOfBlockDeclRefVariable( + const VarDecl *VD, llvm::Value *Storage, CGBuilderTy &Builder, + const CGBlockInfo &blockInfo, llvm::Instruction *InsertPoint) { assert(DebugKind >= CodeGenOptions::LimitedDebugInfo); assert(!LexicalBlockStack.empty() && "Region stack mismatch, stack empty!"); @@ -2880,40 +2945,42 @@ void CGDebugInfo::EmitDeclareOfBlockDeclRefVariable(const VarDecl *VD, const llvm::DataLayout &target = CGM.getDataLayout(); CharUnits offset = CharUnits::fromQuantity( - target.getStructLayout(blockInfo.StructureType) + target.getStructLayout(blockInfo.StructureType) ->getElementOffset(blockInfo.getCapture(VD).getIndex())); - SmallVector<llvm::Value *, 9> addr; - llvm::Type *Int64Ty = CGM.Int64Ty; + SmallVector<int64_t, 9> addr; if (isa<llvm::AllocaInst>(Storage)) - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpDeref)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpPlus)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, offset.getQuantity())); + addr.push_back(llvm::dwarf::DW_OP_deref); + addr.push_back(llvm::dwarf::DW_OP_plus); + addr.push_back(offset.getQuantity()); if (isByRef) { - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpDeref)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpPlus)); + addr.push_back(llvm::dwarf::DW_OP_deref); + addr.push_back(llvm::dwarf::DW_OP_plus); // offset of __forwarding field - offset = CGM.getContext() - .toCharUnitsFromBits(target.getPointerSizeInBits(0)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, offset.getQuantity())); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpDeref)); - addr.push_back(llvm::ConstantInt::get(Int64Ty, llvm::DIBuilder::OpPlus)); + offset = + CGM.getContext().toCharUnitsFromBits(target.getPointerSizeInBits(0)); + addr.push_back(offset.getQuantity()); + addr.push_back(llvm::dwarf::DW_OP_deref); + addr.push_back(llvm::dwarf::DW_OP_plus); // offset of x field offset = CGM.getContext().toCharUnitsFromBits(XOffset); - addr.push_back(llvm::ConstantInt::get(Int64Ty, offset.getQuantity())); + addr.push_back(offset.getQuantity()); } // Create the descriptor for the variable. llvm::DIVariable D = - DBuilder.createComplexVariable(llvm::dwarf::DW_TAG_auto_variable, + DBuilder.createLocalVariable(llvm::dwarf::DW_TAG_auto_variable, llvm::DIDescriptor(LexicalBlockStack.back()), - VD->getName(), Unit, Line, Ty, addr); + VD->getName(), Unit, Line, Ty); // Insert an llvm.dbg.declare into the current block. - llvm::Instruction *Call = - DBuilder.insertDeclare(Storage, D, Builder.GetInsertPoint()); - Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, - LexicalBlockStack.back())); + llvm::Instruction *Call = InsertPoint ? + DBuilder.insertDeclare(Storage, D, DBuilder.createExpression(addr), + InsertPoint) + : DBuilder.insertDeclare(Storage, D, DBuilder.createExpression(addr), + Builder.GetInsertBlock()); + Call->setDebugLoc( + llvm::DebugLoc::get(Line, Column, LexicalBlockStack.back())); } /// EmitDeclareOfArgVariable - Emit call to llvm.dbg.declare for an argument @@ -2926,17 +2993,18 @@ void CGDebugInfo::EmitDeclareOfArgVariable(const VarDecl *VD, llvm::Value *AI, } namespace { - struct BlockLayoutChunk { - uint64_t OffsetInBits; - const BlockDecl::Capture *Capture; - }; - bool operator<(const BlockLayoutChunk &l, const BlockLayoutChunk &r) { - return l.OffsetInBits < r.OffsetInBits; - } +struct BlockLayoutChunk { + uint64_t OffsetInBits; + const BlockDecl::Capture *Capture; +}; +bool operator<(const BlockLayoutChunk &l, const BlockLayoutChunk &r) { + return l.OffsetInBits < r.OffsetInBits; +} } void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, llvm::Value *Arg, + unsigned ArgNo, llvm::Value *LocalAddr, CGBuilderTy &Builder) { assert(DebugKind >= CodeGenOptions::LimitedDebugInfo); @@ -2953,9 +3021,9 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, getContextDescriptor(cast<Decl>(blockDecl->getDeclContext())); const llvm::StructLayout *blockLayout = - CGM.getDataLayout().getStructLayout(block.StructureType); + CGM.getDataLayout().getStructLayout(block.StructureType); - SmallVector<llvm::Value*, 16> fields; + SmallVector<llvm::Metadata *, 16> fields; fields.push_back(createFieldType("__isa", C.VoidPtrTy, 0, loc, AS_public, blockLayout->getElementOffsetInBits(0), tunit, tunit)); @@ -2965,16 +3033,16 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, fields.push_back(createFieldType("__reserved", C.IntTy, 0, loc, AS_public, blockLayout->getElementOffsetInBits(2), tunit, tunit)); - fields.push_back(createFieldType("__FuncPtr", C.VoidPtrTy, 0, loc, AS_public, + auto *FnTy = block.getBlockExpr()->getFunctionType(); + auto FnPtrType = CGM.getContext().getPointerType(FnTy->desugar()); + fields.push_back(createFieldType("__FuncPtr", FnPtrType, 0, loc, AS_public, blockLayout->getElementOffsetInBits(3), tunit, tunit)); - fields.push_back(createFieldType("__descriptor", - C.getPointerType(block.NeedsCopyDispose ? - C.getBlockDescriptorExtendedType() : - C.getBlockDescriptorType()), - 0, loc, AS_public, - blockLayout->getElementOffsetInBits(4), - tunit, tunit)); + fields.push_back(createFieldType( + "__descriptor", C.getPointerType(block.NeedsCopyDispose + ? C.getBlockDescriptorExtendedType() + : C.getBlockDescriptorType()), + 0, loc, AS_public, blockLayout->getElementOffsetInBits(4), tunit, tunit)); // We want to sort the captures by offset, not because DWARF // requires this, but because we're paranoid about debuggers. @@ -2984,7 +3052,7 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, if (blockDecl->capturesCXXThis()) { BlockLayoutChunk chunk; chunk.OffsetInBits = - blockLayout->getElementOffsetInBits(block.CXXThisIndex); + blockLayout->getElementOffsetInBits(block.CXXThisIndex); chunk.Capture = nullptr; chunks.push_back(chunk); } @@ -3000,7 +3068,7 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, BlockLayoutChunk chunk; chunk.OffsetInBits = - blockLayout->getElementOffsetInBits(captureInfo.getIndex()); + blockLayout->getElementOffsetInBits(captureInfo.getIndex()); chunk.Capture = &capture; chunks.push_back(chunk); } @@ -3008,15 +3076,16 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, // Sort by offset. llvm::array_pod_sort(chunks.begin(), chunks.end()); - for (SmallVectorImpl<BlockLayoutChunk>::iterator - i = chunks.begin(), e = chunks.end(); i != e; ++i) { + for (SmallVectorImpl<BlockLayoutChunk>::iterator i = chunks.begin(), + e = chunks.end(); + i != e; ++i) { uint64_t offsetInBits = i->OffsetInBits; const BlockDecl::Capture *capture = i->Capture; // If we have a null capture, this must be the C++ 'this' capture. if (!capture) { const CXXMethodDecl *method = - cast<CXXMethodDecl>(blockDecl->getNonClosureContext()); + cast<CXXMethodDecl>(blockDecl->getNonClosureContext()); QualType type = method->getThisType(C); fields.push_back(createFieldType("this", type, 0, loc, AS_public, @@ -3029,33 +3098,33 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, llvm::DIType fieldType; if (capture->isByRef()) { - std::pair<uint64_t,unsigned> ptrInfo = C.getTypeInfo(C.VoidPtrTy); + TypeInfo PtrInfo = C.getTypeInfo(C.VoidPtrTy); // FIXME: this creates a second copy of this type! uint64_t xoffset; fieldType = EmitTypeForVarWithBlocksAttr(variable, &xoffset); - fieldType = DBuilder.createPointerType(fieldType, ptrInfo.first); - fieldType = DBuilder.createMemberType(tunit, name, tunit, line, - ptrInfo.first, ptrInfo.second, - offsetInBits, 0, fieldType); + fieldType = DBuilder.createPointerType(fieldType, PtrInfo.Width); + fieldType = + DBuilder.createMemberType(tunit, name, tunit, line, PtrInfo.Width, + PtrInfo.Align, offsetInBits, 0, fieldType); } else { - fieldType = createFieldType(name, variable->getType(), 0, - loc, AS_public, offsetInBits, tunit, tunit); + fieldType = createFieldType(name, variable->getType(), 0, loc, AS_public, + offsetInBits, tunit, tunit); } fields.push_back(fieldType); } SmallString<36> typeName; - llvm::raw_svector_ostream(typeName) - << "__block_literal_" << CGM.getUniqueBlockCount(); + llvm::raw_svector_ostream(typeName) << "__block_literal_" + << CGM.getUniqueBlockCount(); llvm::DIArray fieldsArray = DBuilder.getOrCreateArray(fields); llvm::DIType type = - DBuilder.createStructType(tunit, typeName.str(), tunit, line, - CGM.getContext().toBits(block.BlockSize), - CGM.getContext().toBits(block.BlockAlign), - 0, llvm::DIType(), fieldsArray); + DBuilder.createStructType(tunit, typeName.str(), tunit, line, + CGM.getContext().toBits(block.BlockSize), + CGM.getContext().toBits(block.BlockAlign), 0, + llvm::DIType(), fieldsArray); type = DBuilder.createPointerType(type, CGM.PointerWidthInBits); // Get overall information about the block. @@ -3063,24 +3132,22 @@ void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, llvm::MDNode *scope = LexicalBlockStack.back(); // Create the descriptor for the parameter. - llvm::DIVariable debugVar = - DBuilder.createLocalVariable(llvm::dwarf::DW_TAG_arg_variable, - llvm::DIDescriptor(scope), - Arg->getName(), tunit, line, type, - CGM.getLangOpts().Optimize, flags, - cast<llvm::Argument>(Arg)->getArgNo() + 1); + llvm::DIVariable debugVar = DBuilder.createLocalVariable( + llvm::dwarf::DW_TAG_arg_variable, llvm::DIDescriptor(scope), + Arg->getName(), tunit, line, type, CGM.getLangOpts().Optimize, flags, + ArgNo); if (LocalAddr) { // Insert an llvm.dbg.value into the current block. - llvm::Instruction *DbgVal = - DBuilder.insertDbgValueIntrinsic(LocalAddr, 0, debugVar, - Builder.GetInsertBlock()); + llvm::Instruction *DbgVal = DBuilder.insertDbgValueIntrinsic( + LocalAddr, 0, debugVar, DBuilder.createExpression(), + Builder.GetInsertBlock()); DbgVal->setDebugLoc(llvm::DebugLoc::get(line, column, scope)); } // Insert an llvm.dbg.declare into the current block. - llvm::Instruction *DbgDecl = - DBuilder.insertDeclare(Arg, debugVar, Builder.GetInsertBlock()); + llvm::Instruction *DbgDecl = DBuilder.insertDeclare( + Arg, debugVar, DBuilder.createExpression(), Builder.GetInsertBlock()); DbgDecl->setDebugLoc(llvm::DebugLoc::get(line, column, scope)); } @@ -3090,8 +3157,7 @@ llvm::DIDerivedType CGDebugInfo::getOrCreateStaticDataMemberDeclarationOrNull(const VarDecl *D) { if (!D->isStaticDataMember()) return llvm::DIDerivedType(); - llvm::DenseMap<const Decl *, llvm::WeakVH>::iterator MI = - StaticDataMemberCache.find(D->getCanonicalDecl()); + auto MI = StaticDataMemberCache.find(D->getCanonicalDecl()); if (MI != StaticDataMemberCache.end()) { assert(MI->second && "Static data member declaration should still exist"); return llvm::DIDerivedType(cast<llvm::MDNode>(MI->second)); @@ -3099,10 +3165,9 @@ CGDebugInfo::getOrCreateStaticDataMemberDeclarationOrNull(const VarDecl *D) { // If the member wasn't found in the cache, lazily construct and add it to the // type (used when a limited form of the type is emitted). - llvm::DICompositeType Ctxt( - getContextDescriptor(cast<Decl>(D->getDeclContext()))); - llvm::DIDerivedType T = CreateRecordStaticField(D, Ctxt); - return T; + auto DC = D->getDeclContext(); + llvm::DICompositeType Ctxt(getContextDescriptor(cast<Decl>(DC))); + return CreateRecordStaticField(D, Ctxt, cast<RecordDecl>(DC)); } /// Recursively collect all of the member fields of a global anonymous decl and @@ -3128,10 +3193,9 @@ CGDebugInfo::CollectAnonRecordDecls(const RecordDecl *RD, llvm::DIFile Unit, continue; } // Use VarDecl's Tag, Scope and Line number. - GV = DBuilder.createStaticVariable(DContext, FieldName, LinkageName, Unit, - LineNo, FieldTy, - Var->hasInternalLinkage(), Var, - llvm::DIDerivedType()); + GV = DBuilder.createGlobalVariable( + DContext, FieldName, LinkageName, Unit, LineNo, FieldTy, + Var->hasInternalLinkage(), Var, llvm::DIDerivedType()); } return GV; } @@ -3141,32 +3205,12 @@ void CGDebugInfo::EmitGlobalVariable(llvm::GlobalVariable *Var, const VarDecl *D) { assert(DebugKind >= CodeGenOptions::LimitedDebugInfo); // Create global variable debug descriptor. - llvm::DIFile Unit = getOrCreateFile(D->getLocation()); - unsigned LineNo = getLineNumber(D->getLocation()); - - setLocation(D->getLocation()); - - QualType T = D->getType(); - if (T->isIncompleteArrayType()) { - - // CodeGen turns int[] into int[1] so we'll do the same here. - llvm::APInt ConstVal(32, 1); - QualType ET = CGM.getContext().getAsArrayType(T)->getElementType(); - - T = CGM.getContext().getConstantArrayType(ET, ConstVal, - ArrayType::Normal, 0); - } - - StringRef DeclName = D->getName(); - StringRef LinkageName; - if (D->getDeclContext() && !isa<FunctionDecl>(D->getDeclContext()) && - !isa<ObjCMethodDecl>(D->getDeclContext())) - LinkageName = Var->getName(); - if (LinkageName == DeclName) - LinkageName = StringRef(); - - llvm::DIDescriptor DContext = - getContextDescriptor(dyn_cast<Decl>(D->getDeclContext())); + llvm::DIFile Unit; + llvm::DIDescriptor DContext; + unsigned LineNo; + StringRef DeclName, LinkageName; + QualType T; + collectVarDeclProps(D, Unit, LineNo, T, DeclName, LinkageName, DContext); // Attempt to store one global variable for the declaration - even if we // emit a lot of fields. @@ -3177,15 +3221,16 @@ void CGDebugInfo::EmitGlobalVariable(llvm::GlobalVariable *Var, // to find the name of any field in the union. if (T->isUnionType() && DeclName.empty()) { const RecordDecl *RD = cast<RecordType>(T)->getDecl(); - assert(RD->isAnonymousStructOrUnion() && "unnamed non-anonymous struct or union?"); + assert(RD->isAnonymousStructOrUnion() && + "unnamed non-anonymous struct or union?"); GV = CollectAnonRecordDecls(RD, Unit, LineNo, LinkageName, Var, DContext); } else { - GV = DBuilder.createStaticVariable( + GV = DBuilder.createGlobalVariable( DContext, DeclName, LinkageName, Unit, LineNo, getOrCreateType(T, Unit), Var->hasInternalLinkage(), Var, getOrCreateStaticDataMemberDeclarationOrNull(D)); } - DeclCache.insert(std::make_pair(D->getCanonicalDecl(), llvm::WeakVH(GV))); + DeclCache[D->getCanonicalDecl()].reset(static_cast<llvm::Metadata *>(GV)); } /// EmitGlobalVariable - Emit global variable's debug info. @@ -3208,16 +3253,25 @@ void CGDebugInfo::EmitGlobalVariable(const ValueDecl *VD, if (isa<FunctionDecl>(VD->getDeclContext())) return; VD = cast<ValueDecl>(VD->getCanonicalDecl()); - auto pair = DeclCache.insert(std::make_pair(VD, llvm::WeakVH())); - if (!pair.second) + auto *VarD = cast<VarDecl>(VD); + if (VarD->isStaticDataMember()) { + auto *RD = cast<RecordDecl>(VarD->getDeclContext()); + getContextDescriptor(RD); + // Ensure that the type is retained even though it's otherwise unreferenced. + RetainedTypes.push_back( + CGM.getContext().getRecordType(RD).getAsOpaquePtr()); return; + } + llvm::DIDescriptor DContext = getContextDescriptor(dyn_cast<Decl>(VD->getDeclContext())); - llvm::DIGlobalVariable GV = DBuilder.createStaticVariable( + + auto &GV = DeclCache[VD]; + if (GV) + return; + GV.reset(DBuilder.createGlobalVariable( DContext, Name, StringRef(), Unit, getLineNumber(VD->getLocation()), Ty, - true, Init, - getOrCreateStaticDataMemberDeclarationOrNull(cast<VarDecl>(VD))); - pair.first->second = llvm::WeakVH(GV); + true, Init, getOrCreateStaticDataMemberDeclarationOrNull(VarD))); } llvm::DIScope CGDebugInfo::getCurrentContextDescriptor(const Decl *D) { @@ -3243,7 +3297,7 @@ void CGDebugInfo::EmitUsingDecl(const UsingDecl &UD) { // Emitting one decl is sufficient - debuggers can detect that this is an // overloaded name & provide lookup for all the overloads. const UsingShadowDecl &USD = **UD.shadow_begin(); - if (llvm::DIScope Target = + if (llvm::DIDescriptor Target = getDeclarationOrDefinition(USD.getUnderlyingDecl())) DBuilder.createImportedDeclaration( getCurrentContextDescriptor(cast<Decl>(USD.getDeclContext())), Target, @@ -3254,7 +3308,7 @@ llvm::DIImportedEntity CGDebugInfo::EmitNamespaceAlias(const NamespaceAliasDecl &NA) { if (CGM.getCodeGenOpts().getDebugInfo() < CodeGenOptions::LimitedDebugInfo) return llvm::DIImportedEntity(nullptr); - llvm::WeakVH &VH = NamespaceAliasCache[&NA]; + auto &VH = NamespaceAliasCache[&NA]; if (VH) return llvm::DIImportedEntity(cast<llvm::MDNode>(VH)); llvm::DIImportedEntity R(nullptr); @@ -3270,7 +3324,7 @@ CGDebugInfo::EmitNamespaceAlias(const NamespaceAliasDecl &NA) { getCurrentContextDescriptor(cast<Decl>(NA.getDeclContext())), getOrCreateNameSpace(cast<NamespaceDecl>(NA.getAliasedNamespace())), getLineNumber(NA.getLocation()), NA.getName()); - VH = R; + VH.reset(R); return R; } @@ -3279,8 +3333,7 @@ CGDebugInfo::EmitNamespaceAlias(const NamespaceAliasDecl &NA) { llvm::DINameSpace CGDebugInfo::getOrCreateNameSpace(const NamespaceDecl *NSDecl) { NSDecl = NSDecl->getCanonicalDecl(); - llvm::DenseMap<const NamespaceDecl *, llvm::WeakVH>::iterator I = - NameSpaceCache.find(NSDecl); + auto I = NameSpaceCache.find(NSDecl); if (I != NameSpaceCache.end()) return llvm::DINameSpace(cast<llvm::MDNode>(I->second)); @@ -3290,7 +3343,7 @@ CGDebugInfo::getOrCreateNameSpace(const NamespaceDecl *NSDecl) { getContextDescriptor(dyn_cast<Decl>(NSDecl->getDeclContext())); llvm::DINameSpace NS = DBuilder.createNameSpace(Context, NSDecl->getName(), FileD, LineNo); - NameSpaceCache[NSDecl] = llvm::WeakVH(NS); + NameSpaceCache[NSDecl].reset(NS); return NS; } @@ -3318,6 +3371,24 @@ void CGDebugInfo::finalize() { Ty.replaceAllUsesWith(CGM.getLLVMContext(), RepTy); } + for (const auto &p : FwdDeclReplaceMap) { + assert(p.second); + llvm::DIDescriptor FwdDecl(cast<llvm::MDNode>(p.second)); + llvm::Metadata *Repl; + + auto it = DeclCache.find(p.first); + // If there has been no definition for the declaration, call RAUW + // with ourselves, that will destroy the temporary MDNode and + // replace it with a standard one, avoiding leaking memory. + if (it == DeclCache.end()) + Repl = p.second; + else + Repl = it->second; + + FwdDecl.replaceAllUsesWith(CGM.getLLVMContext(), + llvm::DIDescriptor(cast<llvm::MDNode>(Repl))); + } + // We keep our own list of retained types, because we need to look // up the final type in the type cache. for (std::vector<void *>::const_iterator RI = RetainedTypes.begin(), @@ -3326,3 +3397,11 @@ void CGDebugInfo::finalize() { DBuilder.finalize(); } + +void CGDebugInfo::EmitExplicitCastType(QualType Ty) { + if (CGM.getCodeGenOpts().getDebugInfo() < CodeGenOptions::LimitedDebugInfo) + return; + llvm::DIType DieTy = getOrCreateType(Ty, getOrCreateMainFile()); + // Don't ignore in case of explicit cast where it is referenced indirectly. + DBuilder.retainType(DieTy); +} |
